In diplomacy and international relations, shuttle diplomacy is the action of an outside party in serving as an intermediary between (or among) principals in a dispute, without direct principal-to-principal contact. Originally and usually, the process entails successive travel ("") by the intermediary, from the working location of one principal, to that of another.
The term was first applied to describe the efforts of United States Secretary of State Henry Kissinger, beginning November 5, 1973, which facilitated the cessation of hostilities following the Yom Kippur War.
Negotiators often use shuttle diplomacy when the one or both of two principals refuses recognition of the other prior to mutually desired negotiation.
Mediators have adopted the term "shuttle diplomacy" as well.
Kissinger continued to participate in shuttle diplomacy in the Middle East during the Nixon and Ford administrations (1969–1977); it resulted in the Sinai Interim Agreement (1975) and arrangements between Israel and Syria on the Golan Heights (1974). The term became widespread during Kissinger's service as Secretary of State.
Turkey has carried out shuttle diplomacy, often involving Israel: Turkey was Israel's closest ally in the Muslim world, and some Arab countries (notably Syria, which has common borders with Turkey, and with Israel) have been amenable to Turkey, with its own Muslim majority population. Another instance took place between Russia and Georgia in 2008.