The way states reach one another is changing. For most of the period since 1945, conflict diplomacy was organised institutionally, through seats, mandates and votes, and above all at the United Nations. What we can observe is a shift from that hierarchical, institutional order to one of network-based brokerage. Increasingly, the states brokering major conflicts appear to be those that sit where otherwise separated systems still meet.
Some of the most revealing diplomatic channels of the present period have emerged far from the formal centres of power. The United States negotiated its withdrawal from Afghanistan in Doha and reached a ceasefire in its 2026 war with Iran through Pakistan and Qatar. In West Africa, the estranged governments of the Sahel reopened contact with their neighbours in Lomé. None of these brokers belongs among the powers conventionally expected to determine outcomes by virtue of their military weight, wealth or alliances. What is striking is not that small states mediate, which they have always done, but that the decisive channels now run through them rather than through the great powers or the institutions built to organise collective diplomacy. That is what needs explaining.
The explanation seems to lie less in weight than in position. Each of those states sits where networks that will not deal with one another directly still connect, close enough to both sides of a quarrel to carry what neither could send. As the multilateral order thins, that position looks increasingly like the scarce asset in conflict diplomacy. When the strongest powers turn away from the forums but find they cannot impose an outcome by force, they need a state that can reach the enemy for them, and they reach for whoever already holds the line.
The forums seem unable to hold that line at an acceptable price. The formal machinery of conflict diplomacy was built around the United Nations and regional organisations such as ECOWAS, institutions through which states act and which organise bargaining under shared procedures and rules. Such a body can reach enemies well enough, through good offices and quiet envoys. The difficulty is what it costs them to do so. It acts under a mandate, in view of its members, and within legal positions it has already adopted. Each of those constraints raises the price of delicate work: contact that must remain deniable, engagement with a party that must not appear to be recognised, or a bargain that has to be adjusted overnight. A state positioned between the parties faces fewer of those constraints and can keep the contact at arm’s length from the formal record. Where the forum needs authorisation to act, such a state needs only access.
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These are what we might call nodal states: states whose influence derives less from their size than from where they sit. Power of this kind does not come from weight in a hierarchy of force but from location in a system of interdependent actors, where influence follows the connections a state holds. A nodal state occupies a point of connection between diplomatic networks that are distinct and mutually hostile, and if it withdrew, the parties could not close the resulting gap as quickly, as quietly, or as cheaply by any other route. It inherits the opening phase of brokerage from institutions that can no longer manage it at an acceptable cost, and it need not be neutral, only usable to actors that cannot use one another.
The war with Iran offers a first illustration of the mechanism. Under a president who distrusts multilateral machinery on principle, Washington conducted the diplomacy that produced a ceasefire through Pakistani and Qatari channels, outside any standing forum. Pakistan provided the principal channel to Tehran. Each time the talks neared collapse, its army chief kept them alive through a personal line no Western government or standing forum could improvise. Qatar brokered alongside it, while Oman, the region’s established back-channel, had convened the earlier talks before its criticism of Washington pushed it aside. When Senator Lindsey Graham pressed to drop Pakistan as untrustworthy, citing a report that it had sheltered Iranian aircraft, Washington kept Pakistan in the process, because the node held something the coalition needed and could not build for itself. The compromising tie was the useful one.
Why could the Security Council not have opened the channel itself? To reach Tehran, it would have needed the assent of permanent members divided between supporters of the American campaign and states more sympathetic to Iran’s position. It would have had to act in full view, in a chamber where nothing stays deniable, at the very moment when opening contact requires that neither side appear to soften its public position towards the other. And it would have had to stay consistent with the resolutions and legal positions it had already adopted on Iran. A mandate that must be negotiated, a chamber in which little can remain deniable, and legal positions from which the institution cannot easily depart are all costs the node avoids. It needs only a working line to each side.
Working through those channels, the parties assembled the memorandum. The intermediary states could not, however, confer collective authority on it, and the text reserved that function for the Security Council. The Council had also endorsed the 2015 nuclear accord, but that agreement emerged from a formal multilateral negotiating format. The new memorandum emerged from separate state channels.
With Qatar, another dimension comes into view, and it is a temporal one. Its usefulness in Afghanistan rested on access accumulated long before Washington needed it. It had opened the Taliban’s political office in Doha in 2013, years before the United States wanted a way out of Afghanistan. When the moment came, the channel already existed, and Washington negotiated its exit there, sidelining the Afghan government it was bound to support. A multilateral body could have endorsed that outcome, or legitimated it later, but it was poorly placed to open the contact, since formal dealings with the Taliban carried recognition costs its members would not bear. The office had shown as much at its opening in 2013, when the Taliban raised their flag and displayed the name of their toppled emirate, prompting an affronted Kabul to press Qatar to remove both. The office then sat largely unused for years, while the channel remained open. Qatar had spent the better part of a decade making itself the place where the contact could happen. The agreement was signed in Doha, and the Security Council entered downstream to endorse it.
The third case lies in West Africa, where a single node serves rival patrons at once. When Mali, Burkina Faso and Niger completed their withdrawal from ECOWAS in January 2025, already bound together in the Alliance of Sahel States, the regional organisation lost an effective route through which to reopen bargaining with governments that treat its democratic conditions as Western interference. Togo still had one. In April 2026 Lomé reopened formal contact between AES and ECOWAS officials, seating ministers and representatives from the two organisations alongside envoys from the European Union, France and Russia.
France and Russia are strategic rivals in the Sahel, yet both treated Lomé as a point of contact with the AES. Togo remains connected to both sides of that divide, retaining its seat in ECOWAS while cultivating relations with the AES. Its port at Lomé is also a vital artery for the landlocked juntas.
In Togo, these positions reinforce one another. The port that supplies the juntas, the seat retained in ECOWAS, the courtship of the AES and the open lines to Paris and Moscow each increase the value of the others, and together those adjacencies give Togo a strategic position more valuable than any one of them could produce alone. A state too small to weigh on any ledger of force sits where the lines cross, and in a field organised by connection the crossing is the asset. Togo holds that crossing and converts it into leverage.
Taken together, the cases point to three conditions that distinguish a nodal state from an ordinary host or messenger. It maintains access across hostile systems. Other actors depend on that access because they cannot reproduce it quickly. The node can then convert the connection into diplomatic or material advantage. The position is accumulated. No one appoints it. Pakistan’s military channel, Qatar’s Taliban office and Togo’s combination of port access, ECOWAS membership and AES ties were built over years. A forum can confer a mandate overnight. It cannot manufacture that stock of access, or the dependencies that have formed around it, on demand.
Saudi Arabia offers a useful counter-case. It had access to both sides but did not become the broker. It keeps open lines to Washington and to Tehran. It is one of the United States’ longest-standing partners in the Gulf, and it restored relations with Iran in 2023. On access alone, Riyadh might look like the obvious channel through which the war could be settled. The ceasefire diplomacy nevertheless ran through Pakistan and Qatar, because Riyadh is not a conduit between those two capitals but a party to their quarrel, Iran’s regional rival across a decade of proxy wars. Tehran would not entrust its most sensitive diplomacy to a state with which it had competed in Yemen and across the region. A node must remain usable to enemies who cannot use one another, and a state treated by one side as a party to the quarrel cannot perform that function in the same way. What sets Pakistan and Qatar apart from Saudi Arabia in this case is not access alone but a connection both adversaries accept as sufficiently separate from their quarrel.
There is also the question of why a state would seek this position at all. For a small or middle state, becoming an indispensable channel can bring protection, relevance and bargaining power, benefits that material weight alone could not provide. The powers that depend on the channel acquire a stake in the holder’s stability, while the holder gains entry to conversations from which its size might otherwise exclude it. Qatar’s diplomatic usefulness adds to the strategic value the United States attaches to it. Togo’s port, ECOWAS membership and access to the AES give three landlocked governments, as well as France and Russia, reasons to court it. Pakistan converted its mediation into renewed political access in Washington when its relationship with the United States needed repair. These returns make nodal brokerage a means of converting access into advantage rather than a form of diplomatic service.
Because the node controls the channel and does not merely provide a venue, its influence extends to the architecture of the negotiation. It can shape who enters, which proposals reach the other side, when they arrive, and the terms on which each side encounters the other. Qatar’s office gave the Taliban a direct track to Washington while leaving the Afghan government outside the operative channel. Pakistan’s military line similarly made Islamabad part of the process through which proposals were tested and sustained. Brokerage is therefore not a form of neutral transmission. Some of the authority that would ordinarily be subject to institutional mandate and collective scrutiny is instead exercised by a state acting privately and pursuing interests of its own.
The node, then, inherits only part of what the forums did. It can open the channel, provide a venue, carry messages and initiate bargaining. It cannot enforce or monitor a settlement, guarantee its terms, or lend it the broader legitimacy that helps bind parties to an agreement once the bargaining ends. That division shows in the results. Pakistan and Qatar helped bring Washington and Tehran to a signed text, and the text came apart within weeks. Togo brought the Sahel juntas and ECOWAS into one room, and the rupture between them still stands. Qatar enabled the talks through which the United States arranged its exit from Afghanistan, and no durable settlement followed. In each case, the channel opened bargaining without producing an outcome capable of enduring the pressures that followed. Institutions remain necessary for what the nodes cannot do. They matter less as the place where contact begins and bargaining occurs than as the place where an outcome is endorsed, formalised and made to hold. What this amounts to is less a replacement than a division of labour in sequence.
Diplomacy appears to be reorganising around these nodes. Negotiations that common forums struggle to conduct increasingly pass through Islamabad, Doha and Lomé. Washington reached Tehran through Pakistan, and reached the Taliban through Qatar, while the Sahel juntas reached ECOWAS through Togo. In each, the opening ran through a state able to reach both sides at a price the parties would pay.
The resulting order may open negotiations more quickly, but it is less able to close them. The forums, then, have not so much failed as moved downstream, displaced from the opening and kept for the ratification. What we are entering is an age of sequential diplomacy, in which a node conducts the deniable opening and an institution is left to notarise and guarantee what follows. The nodal state is the mark of that age, one that will not convene its enemies and can no longer simply overpower them.
