Raymond Aron died in 1983, long before China emerged as the US’ principal strategic competitor, North Korea acquired nuclear weapons that could threaten the continental United States, and Russia developed its present military relationship with Pyongyang. Nonetheless, few twentieth-century thinkers are suited to understanding the strategic dilemma of today’s United States, Japan, and South Korea.
Raymond Aron was a French philosopher, sociologist, and journalist, and one of Europe’s most prominent thinkers on international relations and strategy. In Peace and War: A Theory of International Relations, he treated diplomacy and military power as inseparable: states negotiate under the shadow of violence, and military capability becomes meaningful only when it is aligned with political objectives. Heavily influenced by Clausewitz, Aron underscored cautiousness, uncertainty, as well as the limitations of abstract strategic calculus. Although nuclear weapons could deter large-scale war, they could not eliminate the elements of coercion, limited collision, misjudgement, or political competition.
Such a perspective is highly relevant to today’s Northeast Asia. The region is not faced with a single threat. China could attempt to disrupt the status quo in the Taiwan Strait through a naval blockade, coercion, or outright military force. North Korea could exploit a broader regional crisis through missile launches, limited conventional attacks, cyber operations, or nuclear signaling. Meanwhile, Russia could further complicate the regional balance by supporting Pyongyang militarily.
Therefore, the central risk is not simply war in Taiwan or a Korean contingency itself. It is the possibility that one crisis could generate a temporary opportunity for another crisis.
Stay ahead of the geopolitical week.
MD Briefing delivers expert analysis across five global fronts — the Indo-Pacific, energy, geoeconomics, European security, and the Middle East — every Monday morning. Free.
An Aronian strategy should focus on closing such a window of opportunity.
If China initiated a large-scale military operation near Taiwan, Washington would likely have to transfer a substantial amount of assets—including navy, air force, ISR, logistics, and ammunition assets—to the Taiwan theater. Due to its geographical location and the presence of US bases, Japan would immediately become important.
At the critical juncture, North Korea would confront a strategic choice. Pyongyang would not necessarily embark upon a full-fledged invasion. Instead, it could test whether US attention has become sufficiently divided to permit limited diversion.
From the standpoint of Aron, this is where deterrence becomes political, and not simply confined to numerical considerations. What matters is not only how much aggregate military power the allies possess, but what Beijing and Pyongyang believe can actually be used in a particular situation.
Hence, the first requirement is to reduce uncertainty among allies.
In that regard, Washington, Tokyo, and South Korea should establish a standing trilateral mechanism dedicated to simultaneous contingencies. The mechanism should conduct annual classified tabletop exercises that include scenarios like China’s naval blockade combined with North Korea’s missile coercion, a limited North Korean attack accompanied by a long-duration Taiwan conflict, and Russia providing intelligence or material resources to Pyongyang.
Such exercises should focus on scarcity, likely raising the following questions: Which theater would receive additional ISR? How should air tanker aircraft be allocated? What if both Japan and South Korea need additional missile defense? Which ports, airfields, and logistical hubs would emerge as bottlenecks?
Aron distrusted strategic theory premised on perfect predictability. Therefore, the best way to manage unpredictability is to reduce it among allies while preserving it for adversaries, instead of eliminating it altogether.
Washington and Seoul should also define “Minimum Peninsula Deterrence,” albeit in a private manner: it would be a package of US capabilities that should be preserved for Korean Peninsula operations even during a Taiwan contingency. To be sure, it should not be a rigid prohibition on redeployment. Aron would have opposed such a type of inflexibility. Instead, it should establish planning thresholds for command-and-control, ISR, missile defense, air power, logistics, and other enabling capabilities.
The key objective is to guarantee that USFK’s redeployment to Taiwan would not be interpreted by Pyongyang as meaning that America’s security commitment vis-à-vis South Korea has temporarily disappeared.
In that sense, South Korea should strengthen what could be called deterrence endurance.
Despite delayed US reinforcement, the ROK military should be able to deter and, if necessary, defeat a limited—yet substantial—North Korean attack. A useful planning benchmark would be the ability to conduct 30 days of intensive operations in critical areas without assuming immediate external resupply.
This means greater stockpiling of precision-guided munitions, missile defense interceptors, artillery shells, fuel, spare parts, and unmanned systems. South Korea should invest more in hardened shelters, dispersion, rapid runway repair, redundant command networks, and inexpensive anti-unmanned aircraft systems.
Above all, Seoul should enhance its capabilities to conduct surveillance, target acquisition, counterfire operations, and precision strikes even when American ISR availability is temporarily constrained.
This would not weaken the alliance. Rather, it would make the existing alliance more flexible. A stronger South Korea could offer greater freedom for Washington to respond elsewhere without creating a deterrence vacuum.
Japan should play a different but complementary role.
Japan’s primary contribution should be continuity of allied power projection. Tokyo should assume that major American and Japanese bases could be attacked in the early phase of a contingency—as illustrated by recent war games—and prepare accordingly.
Meanwhile, aircraft should conduct regular exercises for dispersal to alternative military and civilian airfields. Fuel, maintenance facilities, and command networks should be distributed, rather than concentrated. Japan should expand rapid runway repair, port redundancy, anti-submarine warfare, SLOC protection, integrated air and missile defense, and the protection of US bases.
This would serve an Aronian purpose: denying China’s expectation that tactical success in the initial steps of the dispute could lead to strategic success.
The three democracies—the United States, Japan, and South Korea—should redesign exercises centered on scarcity and transition. Future trilateral exercises should first simulate a Taiwan contingency and add a North Korean provocation scenario after the bulk of the US and Japanese Self-Defense Forces is already dispatched to the Taiwan Strait, just as the recent Atlantic Council war game outlined.
Commanders are required to review the first 72 hours, the first seven days, and the first 30 days of a simultaneous crisis. This is the timeframe when the adversaries might believe that political decision-making and troop movements have not yet caught up with events.
The goal is to ensure that any exploitable gaps are prevented.
Ammunition and industrial resilience also need to be treated as strategic problems, rather than mere logistical matters. Washington, Tokyo, and Seoul should establish emergency transition procedures, identify critical shortages, expand compatible production capacity, and negotiate wartime maintenance arrangements in advance.
South Korea’s large-scale conventional defense industrial base and Japan’s technological strength could be invaluable elements of allied strategic depth.
At the same time, Aron would likely warn against treating China, North Korea, and Russia as a single homogeneous bloc. Although their cooperation is becoming increasingly important, their objectives are far from identical.
While preserving crisis communication with Beijing, Washington, Tokyo, and Seoul should strengthen deterrence. The objective is to convince Chinese leaders that coercion would be unsuccessful while avoiding the impression that perpetual confrontation is inevitable.
This would probably be the most noteworthy Aronian equilibrium. Military might should operate side by side with diplomacy. For Aron, diplomats and soldiers were not alternatives. They were two instruments of the same foreign policy.
Such a lesson should guide today’s Northeast Asia.
The United States should remain the ultimate strategic guarantor. South Korea should become capable enough that a Taiwan crisis does not create an opportunity for Pyongyang. Japan should have sufficient resilience so that Chinese attacks would not easily halt allied operations.
Also, the three countries should reduce uncertainty among themselves while preserving uncertainty to complicate adversaries’ calculations. The goal is not simply to accumulate more military power.
It is to ensure that Beijing and Pyongyang would never discern the moment when diffused attention, logistical weakness, or alliance hesitation would make invasion a profitable option.
In Aronian terms, the task is to close the window of opportunity without closing the window of diplomacy. That may be the most useful lesson that Raymond Aron could provide to contemporary Northeast Asia.
