“A scientist, whether theorist or experimenter, puts forward statements, or systems of statements, and tests them step by step.”-Karl R. Popper -The Logic of Scientific Discovery (1959)

For the moment, informed global concerns about nuclear war avoidance center on superpower crises over Ukraine. Though such existential concerns are understandable and well-founded, there are coinciding nuclear threats in other parts of the world. More precisely, because world politics must always be evaluated as a system,[1] whatever happens in Ukraine regarding nuclear warfare matters could sometime spill over into the Middle East.

               Irremediably, the specific shape or form of any such “spillover” would be difficult to decipher.

               Now, a very basic query must be raised: What are the essential parameters of relevant strategic planning? Whether or not analysts care to admit it, a nuclear war in the Middle East is conceivable and more-or-less plausible.[2]Nothing can be said about tangible probabilities because a nuclear war – any nuclear war – would represent a unique event. By definition, any nuclear conflict would be sui generis. In science and mathematics, true probabilities must be based upon the isolable frequency of pertinent past events.

               Always.

               Quo Vadis? By definition, no other subject of national security concern could possibly justify comparably serious examinations. This means, inter alia, that Israel’s most capable strategic thinkers and scholars are immediately responsible for ensuring that virtually every imaginable nuclear war scenario will be suitably delineated and explored.[3] It suggests further that Israel’s strategic analyses be consistently and expressly theoretical.

               Recalling philosopher of science Karl Popper’s oft-quoted line (borrowed from the classic German poet, Novalis), “Theory is a net. Only those who cast, can catch.”[4]

               A core question needs to be raised at the outset: How might Israel find itself caught up in a nuclear war? Under what identifiable circumstances could Israel discover itself involved with actual nuclear weapons use?

               Presently, as Israel remains the only regional nuclear power, such concerns could appear baseless. Nonetheless, always changing “order-of-battle” considerations could change suddenly and unexpectedly, most ominously in regard to Iran.[5] Even in the continuing absence of a regional nuclear adversary, a beleaguered Israel could find itself having to rely upon nuclear deterrence against sub-nuclear (i.e., biological and/or massive conventional) threats. Acknowledging such a potentially existential reliance, the prospect of atomic weapons firing ought never be excluded or ruled out ipso facto.

               What next? To answer its most basic nuclear security questions, Jerusalem’s strategic planners will need to adhere closely to variously well-established canons of systematic inquiry, logical analysis and dialectical reasoning. Accordingly, there are four intersecting narratives that best “cover the bases” of Israel’s obligatory nuclear preparedness: Nuclear Retaliation; Nuclear Counter Retaliation; Nuclear Preemption; and Nuclear War fighting.  In sufficient detail, here is what these four comprehensive scenarios could reveal to that country’s capable leaders and scholars:

(1)          Nuclear Retaliation

               Should an enemy state or alliance of enemy states ever launch a nuclear first-strike against Israel, Jerusalem would respond, assuredly, and to whatever extent judged possible/cost-effective, with a nuclear retaliatory strike. If enemy first-strikes were to involve certain other forms of unconventional weapons, notably high-lethality biological weapons, Israel might still launch a nuclear reprisal. This particular response would likely depend, in significant measure, on Jerusalem’s calculated expectations of follow-on aggression and its associated assessments of comparative damage-limitation.

               If Israel were to absorb “only” a massive conventional attack, a nuclear retaliation could not automatically be ruled out, especially if: (a) the state aggressor(s) were perceived to hold nuclear and/or other unconventional weapons in reserve; and/or (b) Israel’s leaders believed that exclusively non-nuclear retaliations could not prevent annihilation of the state. A nuclear retaliation by Israel could be ruled out ipso facto only where enemy state aggressions were conventional, “typical” (that is, sub-existential or consistent with previous historic instances of enemy attack in degree and intent), and hard-target directed (that is, directed solely toward Israeli weapons and military infrastructures, not at “soft” civilian populations).

(2)          Nuclear Counter retaliation

               Should Israel feel compelled to preempt enemy state aggression with conventional weapons, the target state(s)’ response would largely determine Jerusalem’s subsequent moves. If this response were in any way nuclear, Israel would expectedly turn to nuclear counter-retaliation. If this retaliation were to involve other weapons of mass destruction, Israel might then feel pressed to take an appropriate escalatory initiative. Any such initiative would necessarily reflect the presumed need for what is formally described in strategic parlance as “escalation dominance.”

                There is more. All pertinent decisions would depend upon Jerusalem’s early judgments of enemy state intent and on its accompanying calculations of essential damage-limitation. Should the enemy state response to Israel’s preemption be limited to hard-target conventional strikes, it is unlikely that Israel would move on to any nuclear counter retaliations. If, however, the enemy conventional retaliation were “all-out” and plainly directed toward Israeli civilian populations – not just at Israeli military targets – an Israeli nuclear counter retaliation could not be excluded.

               It would appear that such a unique counter-retaliation could be ruled out only if the enemy state’s conventional retaliation were entirely proportionate to Israel’s preemption, confined exclusively to Israeli military targets, circumscribed by the legal limits of “military necessity” (a limit routinely codified in the law of armed conflict)[6] and accompanied by various explicit and verifiable assurances of non-escalatory intent.

(3)          Nuclear Preemption

               It is prima facie implausible (perhaps generally even inconceivable) that Israel would ever decide to launch a preemptive nuclear strike. Although circumstances could arise wherein such a strike would be perfectly rational, it is unlikely that Israel would ever allow itself to reach such “all or nothing” security circumstances. Unless the relevant nuclear weapons were employed in a fashion still consistent with the authoritative laws of war,[7] this form of preemption would represent a flagrantly serious violation of binding (codified and customary) international rules.

               Even if such consistency were possible, the psychological/political impact on the world community would be negative and far-reaching. In essence, this means that an Israeli nuclear preemption could be expected only where (a) Israel’s state enemies had acquired nuclear and/or other weapons of mass destruction judged capable of annihilating the Jewish State; (b) these enemies had made it clear that their military intentions paralleled their capabilities; (c) these enemies were believed ready to begin an active “countdown to launch;” and (d) Jerusalem believed that Israeli non-nuclear preemptions could not possibly achieve needed minimum levels of damage-limitation – that is, levels consistent with physical preservation of the state and nation.[8]

               It is arguable, at least in principle, that an Israeli non-nuclear preemption could sometime represent the best way to reduce the risks of a regional nuclear war.  Such an argument would flow logically from the assumption that if Israel waits too long for Iran to strike first, that enemy (once it had crossed the nuclear weapons threshold) could launch its own nuclear attacks. Even if Iran should strike first with conventional weapons only, Israel might calculate no rational damage-limiting alternatives to launching a nuclear retaliation.

               To the extent that this narrative is taken as a reasonable scenario, the cost-effectiveness/legality of certain Israeli non-nuclear preemptions could be enhanced.  Arguably, in these actions, Jerusalem’s preemptive commitment to “anticipatory self-defense” would be entirely law-enforcing.  No such defense could be mustered on behalf of any Israeli nuclear preemption, an unprecedented attack that would (in virtually all conceivable circumstances) be in stark violation of authoritative international law.  A possible exception could obtain only if Israel’s resort to a nuclear preemption were compelled by plausible expectations of national disappearance (see, in this connection, the 1996 Advisory Opinion of the International Court of Justice).

               Should Israel feel compelled to resort to actual nuclear war-fighting at some point after (1) enemy reprisals for Israel’s conventional preemption cause the state to escalate to nuclear weapons, or (2) enemy chemical/biological/conventional first-strikes cause Israel to escalate to nuclear weapons, the country would confront substantial problems under international law.  Should an enemy state launch nuclear first-strikes against Israel (not presently a possibility unless Pakistan is counted as an enemy state), Jerusalem’s retaliatory use of nuclear weapons would be less problematic jurisprudentially. At the same time, matters of law in such dire circumstances would become utterly moot.

(4)          Nuclear War fighting

               Should nuclear weapons be introduced into an actual conflict between Israel and its enemies, either by Israel or a particular foe, nuclear war fighting, at one level or another, would ensue. This would be true so long as: (a) enemy first-strikes against Israel would not destroy Jerusalem’s second-strike nuclear capability; (b) enemy retaliations for an Israeli conventional preemption would not destroy Jerusalem’s nuclear counter retaliatory capability; (c) Israeli preemptive strikes involving nuclear weapons would not destroy adversarial second-strike nuclear capabilities; and (d) Israeli retaliation for enemy conventional first-strikes would not destroy enemy nuclear counter retaliatory capability.

               It follows that in order to satisfy its essential survival requirements, Israel should take immediate, recognizable and reliable steps to ensure the likelihood of (a) and (b) above and the unlikelihood of (c) and (d).

               In all cases, Israel’s nuclear strategy and forces must remain oriented toward deterrence, never to actual war fighting. With this in mind, in all likelihood, Jerusalem has already taken suitable steps to reject tactical or relatively low-yield “battlefield” nuclear weapons and any operational plans for counter-force targeting. For Israel, always and without exception, nuclear weapons can make sense only for deterrence ex ante; not revenge ex post.

               The four above scenarios should remind Israeli planners and policy-makers of the overriding need for coherent nuclear theory and strategy. Among other things, this need postulates a counter-value targeted nuclear retaliatory force that is recognizably secure from enemy first-strikes and presumptively capable of penetrating any enemy state’s active defenses. To best meet this imperative security expectation, the IDF would be well-advised to continue with its sea-basing (submarines) of designated portions of its nuclear deterrent force.[9] To satisfy the equally important requirements of “penetration-capability,” Tel-Aviv will have to stay conspicuously well ahead of all foreseeable enemy air defense refinements.

               There is more. Sooner rather than later, Jerusalem will need to consider a partial and possibly sequenced end to its historic policy of “deliberate nuclear ambiguity.” By selectively beginning to remove the “bomb” from Israel’s “basement,” national planners would be better positioned to enhance the credibility of their country’s nuclear deterrence posture. However counter-intuitive, the mere possession of nuclear forces could never automatically bestow credible nuclear deterrence upon Israel or on any other nation-state.

               Always, something more would be necessary.

               In Israel’s strategic nuclear planning, would-be aggressors, whether nuclear or non-nuclear, should be systematically encouraged to believe that Jerusalem has the required will[10]to launch measured nuclear forces in retaliation and that these forces are sufficiently invulnerable to any-contemplated first-strike attacks. Additionally, these enemies must be made to expect that Israel’s designated nuclear forces could reliably penetrate all already-deployed ballistic-missile defenses and air defenses.

                Israel, it follows from all this, could benefit substantially from releasing at least certain broad outlines of its strategic configurations, capacities and doctrines. Without a prior and well-fashioned strategic doctrine, no such release could make sufficiently persuasive deterrent sense.

                Such intentionally released information could support the perceived utility and security of Israel’s nuclear retaliatory forces. Disclosed solely to enhance Israeli nuclear deterrence, it would center purposefully upon the targeting, hardening, dispersion, multiplication, basing, and yield of selected national ordnance. Under certain conditions, the credibility of Israeli nuclear deterrence could vary inversely with the perceived destructiveness of its pertinent weapons. These should never be treated as issues of “common sense.”            

                Among other fundamental concerns, Israel will need to prepare differently for an expectedly rational nuclear adversary than for an expectedly irrational one.[11] In such variously nuanced and unprecedented circumstances,[12] national decision-makers in Jerusalem would need to distinguish precisely and meaningfully between genuine enemy irrationality, pretended or feigned enemy irrationality and authentic enemy madness.[13] In actual military practice, operationalizing such subtle distinctions could present staggeringly complex intellectual challenges and would need to take account of whether pertinent principal adversaries were (1) fully or partially sovereign states; (2) sub-national terrorist groups; or (3) “hybrid” enemies comprised of both state and sub-state foes.

               Whatever nuances will be encountered in Jerusalem and Tel Aviv, the only rational way for Israel to effectively meet all these growing challenges will be to stay well ahead of its adversaries through the indispensable power of erudition and scholarship. Long ago, in classical Greece and Macedonia, the linked arts of war and deterrence were already described by military planners as challenges of “mind over mind,” not merely crude contests of “mind over matter.” For Israel, such ancient descriptions remain even more valid today.

               Before Israel can successfully satisfy its most primary security and survival obligations,                the country’s capable scholars must assume increasing intellectual responsibility for meeting the relevant challenges of “mind.” Most importantly, this means carrying on a coherent strategic “conversation” that goes significantly beyond usual day-to-day political commentaries or narrowly partisan observations. In the final analysis, Israel’s security situation must never be allowed to become a result of narrow political bickering between competing parties or interests. Instead, it should be allowed to emerge as the lifesaving outcome of optimally disciplined and dispassionate strategic scholarship.

               There is one additional observation, a crucial one that brings the reader back to current superpower disagreements over Ukraine. Though present concern is that these disagreements could impact the prospect of a nuclear conflict in the Middle East (because world politics must always be assessed as a system[14]), there are also variously urgent reciprocal concerns. To wit, a nuclear crisis or nuclear war in the Middle East could affect the likelihood of nuclear crisis or nuclear war between the United States and Russia over Ukraine.

               Of necessity, the basis of this bold assertion is deductive argument rather than empirical generalization. Such a reasoned basis is by no means useless, deceptive or inferior. It represents the only logically acceptable basis for offering estimations of any such unique (sui generis) strategic circumstances.[15]

               Going forward, the prevention of a nuclear war in the Middle East should always be founded upon science-based scholarship and law,[16] not on transient political factors. As a practical matter, observers are unlikely to see any propitious end to “Westphalian” international relations soon,[17] but planners and policy-makers must still acknowledge that the “dreadful equality” of Thomas Hobbes’ “State of Nature” among individuals is also starting to characterize the relationship of certain states in world politics. More to the point, with the continued proliferation of nuclear weapons, some of the “weakest” states could become able to “kill the strongest.”[18]

               Among other things, this hitherto ignored outcome would mean that a particular state’s tangible “superiority” in nuclear weapons might not necessarily produce any proportionate increments of national security or safety.

               “Realistically,” to sum up these matters concerning nuclear war avoidance in the Middle East, analysts ought to not soon expect any fundamental transformations of Realpolitik in the region. In the short term, at least, Israel’s planners and policy makers should continue to do whatever is needed and lawful[19] to maintain the country’s critical deterrence and defense postures. At the same time, and preferably in some sorts of institutionalized cooperation with potentially nuclear adversary Iran, Jerusalem should begin to think beyond the “Westphalian” system of self-help power politics altogether.[20] Though hard to take seriously regarding issues of international relations, the comprehensive wisdom of Federico Fellini does reasonably apply to variously complex matters of nuclear war avoidance:                 “The visionary,” warned the Italian film director succinctly but broadly, “is the only realist.”

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[1] In this connection, recall the unchallengeable observation of Jesuit philosopher Pierre Teilhard de Chardin in The Phenomenon of Man: “The existence of `system’ in the world is at once obvious to every observer of nature, no matter whom….”

[2] For early accounts of nuclear war effects  by this author, see: Louis René Beres, Apocalypse: Nuclear Catastrophe in World Politics (Chicago: University of Chicago Press, 1980); Louis René Beres, Mimicking Sisyphus: America’s Countervailing Nuclear Strategy (Lexington, Mass., Lexington Books, 1983); Louis René Beres, Reason and Realpolitik: U.S. Foreign Policy and World Order (Lexington, Mass., Lexington Books, 1984); and Louis René Beres, Security or Armageddon: Israel’s Nuclear Strategy (Lexington, Mass., Lexington Books, 1986). Most recently, by Professor Beres, see: Surviving amid Chaos: Israel’s Nuclear Strategy (New York, Rowman & Littlefield, 2016; 2nd ed. 2018). https://paw.princeton.edu/new-books/surviving-amid-chaos-israel%E2%80%99s-nuclear-strategy

[3] Rabbi Eleazar quoted Rabbi Hanina, who said: “Scholars build the structure of peace in the world.” See: The Babylonian Talmud, Order Zera’im, Tractate Berakoth, and IX.

[4] See Karl Popper, epigraph to The Logic of Scientific Discovery (1959).

[5] On deterring a soon-to-be nuclear Iran, see Professor Louis René Beres and General John T. Chain, “Could Israel Safely deter a Nuclear Iran? The Atlantic, August 2012; Professor Louis René Beres and General John T. Chain, “Israel; and Iran at the Eleventh Hour,” Oxford University Press (OUP Blog), February 23, 2012; and Beres/Chain: Israel: https://besacenter.org/living-iran-israels-strategic-imperative-2/ General Jack Chain (USAF) was Commander-in-Chief, U.S. Strategic Air Command (CINCSAC), from 1986 to 1991.

[6] The law of armed conflict requires, inter alia, that every use of force by an army or an insurgent group meet the test of “proportionality.” Drawn from the core legal principle (St. Petersburg Declaration, 1868, etc.) that “the means that can be used to injure an enemy are not unlimited,” proportionality stipulates that every resort to armed force be limited to what is necessary for meeting appropriate military objectives. This element of codified and customary international law applies to all judgments of military advantage and planned reprisals. It does not mean that each side must either suffer or create symmetrical harms. The rule of proportionality does not stipulate that a defending state must necessarily limit its use of force to the same “amount” employed by the other side. Proper determinations of proportionality need never be calculated in a geopolitical vacuum. To a limited extent, for example, such legal decisions may take into correct consideration the extent to which a particular adversary has committed prior or still-ongoing violations of the law of armed conflict.

[7] According to the rules of international law, every use of force must be judged twice:  once with regard to the right to wage war (jus ad bellum), and once with regard to the means used in conducting war (jus in Bello).  Today, acknowledging the Kellogg-Briand Pact of 1928 and the United Nations Charter of 1945, all right to aggressive war has been abolished.  However, the long-standing customary right of self-defense remains, codified at Article 51 of the Charter.  Similarly, subject to conformance, inter alia, with jus in Bello criteria, certain instances of humanitarian intervention and collective security operations may also be consistent with jus ad bellum.  The laws of war, the rules of jus in Bello, comprise (1) laws on weapons; (2) laws on warfare; and (3) humanitarian rules.  Codified primarily at The Hague and Geneva Conventions (and known thereby as the law of The Hague and the law of Geneva), these rules attempt to bring discrimination, proportionality and military necessity into belligerent calculations.

[8]The question of preemption – any preemption – must also be confronted as alegal matter. For early writings by the present author on this matter with particular reference to Israel (a matter regarding “anticipatory self-defense” under international law), see:  Louis René Beres, “Preserving the Third Temple: Israel’s Right of Anticipatory Self-Defense Under International Law,”  26 VANDERBILT JOURNAL OF TRANSNATIONAL LAW,  111 (1993);  Louis Rene Beres, “After the Gulf War: Israel, Preemption and Anticipatory Self-Defense,”  13 HOUSTON JOURNAL OF INTERNATIONAL LAW 259 (1991);  Louis Rene Beres, “Striking `First’:  Israel’s Post-Gulf War Options Under International Law,”  14 LOYOLA OF LOS ANGELES INTERNATIONAL AND COMPARATIVE LAW JOURNAL (1991);  Louis Rene Beres, “Israel and Anticipatory Self-Defense,”  8 ARIZONA JOURNAL OF INTERNATIONAL AND COMPARATIVE LAW  89 (1991);  Louis Rene Beres,  “After the Scud Attacks: Israel, `Palestine,’ and Anticipatory Self-Defense,”  6  EMORY INTERNATIONAL LAW REVIEW  71 (1992).

[9] On Israeli submarine basing measures, see: Louis René Beres and (Admiral/USN/ret.) Leon “Bud” Edney, “Israel’s Nuclear Strategy: A Larger Role for Submarine-Basing,” The Jerusalem Post, August 17, 2014; also Professor Beres and Admiral Edney, “A Sea-Based Nuclear Deterrent for Israel,” Washington Times, September 5, 2014. Admiral Edney was a NATO Supreme Allied Commander (SACLANT).

[10] In modern philosophy, a more general highlighting of “will” is discoverable in Arthur Schopenhauer’s writings, especially The World as Will and Idea (1818). For his own inspiration (and by his own expressed acknowledgment), Schopenhauer drew freely upon Johann Wolfgang von Goethe. Later, Nietzsche drew just as freely (and perhaps far more importantly) upon Schopenhauer. Goethe also served as a core intellectual source for Spanish existentialist Jose Ortega y’ Gasset, author of the prophetic work, The Revolt of the Masses (Le Rebelion de las Masas (1930). See, accordingly, Ortega’s very grand essay, “In Search of Goethe from Within” (1932), written for Die Neue Rundschau of Berlin on the occasion of the centenary of Goethe’s death. It is reprinted in Ortega’s anthology, The Dehumanization of Art (1948) and is available from Princeton University Press (1968).

[11] Expressions of such decisional irrationality in world politics could take variously different forms. These sometime overlapping forms, which would have no necessary correlations with authentic madness, include a disorderly or inconsistent value system; computational errors in calculation; an incapacity to communicate efficiently; random or haphazard influences in the making or transmittal of particular decisions; and the internal dissonance generated by any structure of collective decision-making (i.e., assemblies of pertinent individuals who lack identical value systems and/or whose organizational arrangements impact their willing capacity to act as a single or unitary national decision maker)

[12] Recall widely-cited observation of Sigmund Freud (in his book about America’sAmerica’s Woodrow Wilson): ““Fools, visionaries, sufferers from delusions, neurotics and lunatics have played great roles at all times in the history of mankind, and not merely when the accident of birth had bequeathed them sovereignty. Usually, they have wreaked havoc; but not always.” Sigmund Freud & William C. Bullitt, Thomas Woodrow Wilson: A Psychological Study, at xvi (1967)..”

[13] On such madness, see Seneca, 1st Century AD/CE: “We are mad, not only individuals, but nations also. We restrain manslaughter and isolated murders, but what of war, and the so-called glory of killing whole peoples? ….Man, the gentlest of animals, is not ashamed to glory in blood-shedding, and to wage war when even the beasts are living in peace together.” (Letters, 95).

[14]In this regard, Israel’s nuclear strategy could have tangible effects upon the United States and meaningful implications for U.S. national security. On these generally ignored but still-significant effects, see Professor Louis René Beres and (General/USA/ret.) Barry McCaffrey, ISRAEL’S NUCLEAR STRATEGY AND AMERICA’S NATIONAL SECURITY, Tel-Aviv University and Israel Institute for Strategic Studies, Tel-Aviv, December 2016: https://sectech.tau.ac.il/sites/sectech.tau.ac.il/files/PalmBeachBook.pdf

[15] In this connection, consider Jose Ortega y’Gasset in Man and Crisis (1958): “Science, by which I mean the entire body of knowledge about things, whether corporeal or spiritual, is as much a work of imagination as it is of observation….”

[16]William Blackstone, the jurist upon whose work the United States owes its own basic system of law, remarks at Book 4 of his Commentaries on the Law of England: “The law of nations (international law) is always binding upon all individuals and all states. Each state is expected, perpetually, to aid and enforce the law of nations as part of the common law, by inflicting an adequate punishment upon the offenses against that universal law.”

[17] See: Treaty of Peace of Munster, Oct. 1648, 1 Consol. T.S. 271; and Treaty of Peace of Osnabruck, Oct. 1648, 1.Consol. T.S. 119, Together, these two treaties comprise the Peace of Westphalia. De facto, though co-existing with various patterns of collective security, “Westphalian” international law remains essentially a “vigilante” or self-help system of power management.

[18]Though composed in the seventeenth century, Thomas Hobbes’ Leviathan still offers a still- illuminating vision of balance-of-power world politics. Says the English philosopher in Chapter XIII, “Of the Natural Condition of Mankind, as concerning their Felicity, and Misery:”  “During such chaos,” a condition which Hobbes identifies as a ‘time of War,’  it is a time “…where every man is Enemy to every man… and where the life of man is solitary, poor, nasty, brutish, and short.” Hobbes believed that the condition of “nature” in world politics was less chaotic than that same condition existing among individual human beings. This owes to what he called the “dreadful equality” of individual men in nature concerning ability to kill others, but this once-relevant differentiation has now effectively disappeared with the global spread of nuclear weapons. Today, certain “weaker” states that are nonetheless nuclear could still bring “unacceptable harms” to certain “stronger” states.

[19] For the authoritative sources of international law, see art. 38 of the Statute of the International Court of Justice; done at San Francisco, June 26, 1945. Entered into force, Oct. 24, 1945; for the United States, Oct. 24, 1945.  59 Stat. 1031, T.S. No. 993, 3 Bevans 1153, 1976 Y.B.U.N., 1052.

[20] Even amid “Westphalian” geopolitics in international relations, a dominant jurisprudential assumption of solidarity obtains between all states. This fundamental assumption is already mentioned in Justinian, Corpus Juris Civilis (533 C.E.); Hugo Grotius, 2 De Jure Belli Ac Pacis Libri Tres, Ch. 20 (Francis W. Kesey, tr., Clarendon Press, 1925)(1690); and Emmerich De Vattel, 1 Le Droit Des Gens, Ch. 19 (1758).