Examples of diplomacy fall into a handful of recognizable categories: bilateral treaties between two governments, multilateral agreements among many, crisis mediation, judicial settlement, trade negotiation, economic sanctions, and cultural exchange. Each category has produced concrete cases that show how the tool works in practice, and looking at them side by side is the clearest way to understand what diplomacy actually does.
Bilateral Treaties Between Two Governments
The oldest form of diplomacy is two nations negotiating directly. The Cold War arms control agreements between the United States and Soviet Union are the highest-stakes modern examples. The Strategic Arms Limitation Talks ran from November 1969 to May 1972 and produced two agreements: a treaty capping each side at no more than 100 anti-ballistic missile launchers in each of two permitted deployment areas, which also banned sea-based, air-based, and space-based missile defense systems,1U.S. Department of State. Anti-Ballistic Missile Treaty (ABM Treaty) and an Interim Agreement freezing the number of strategic ballistic missile launchers and prohibiting construction of new fixed land-based ICBM launchers after July 1, 1972.2Nuclear Threat Initiative. Interim Agreement Between the United States of America and the Union of Soviet Socialist Republics on Certain Measures With Respect to the Limitation of Strategic Offensive Arms
The Intermediate-Range Nuclear Forces Treaty went further. Signed on December 8, 1987, it required both countries to destroy all ground-launched ballistic and cruise missiles with ranges between 500 and 5,500 kilometers, along with their launchers and support equipment, within three years.3U.S. Department of State. Treaty Between The United States Of America And The Union Of Soviet Socialist Republics On The Elimination Of Their Intermediate-Range And Shorter-Range Missiles SALT I froze numbers; the INF Treaty eliminated an entire class of weapon.
Bilateral treaties can also come undone. The United States withdrew from the INF Treaty on August 2, 2019, citing Russia’s deployment of a ground-launched cruise missile system that violated the treaty’s terms. Russia denied the allegation.4U.S. Department of State. U.S. Withdrawal from the INF Treaty on August 2, 2019 Any bilateral agreement depends on political will and verifiable compliance from both sides.
Multilateral Agreements Among Many Nations
When an issue crosses borders, two-party talks are rarely enough. Multilateral diplomacy brings three or more nations together, usually inside institutions that provide rules and a venue. The United Nations is the primary example, with 193 member states.5United Nations. About Us Under Chapter VII of the UN Charter, Article 39 empowers the Security Council to determine the existence of threats to international peace and decide what measures to take, from economic sanctions and the severance of diplomatic relations under Article 41 to the authorization of military force under Article 42.6United Nations. Chapter VII – Action with Respect to Threats to the Peace, Breaches of the Peace, and Acts of Aggression That is the legal foundation for UN peacekeeping and the Council’s sanctions regimes.
Two landmark multilateral agreements show how this style of diplomacy plays out on specific issues.
The Paris Agreement on Climate Change
Adopted on December 12, 2015, the Paris Agreement aims to hold the increase in global average temperature to well below 2°C above pre-industrial levels, with efforts to limit the rise to 1.5°C.7UNFCCC. Paris Agreement Instead of imposing binding emission targets from the top down, the agreement relies on nationally determined contributions in which each country sets its own goals and reports on progress. Getting nearly every nation to sign onto a shared climate framework required years of negotiation and significant concessions on financial support for developing countries.
The Iran Nuclear Deal
The Joint Comprehensive Plan of Action, reached in Vienna on July 14, 2015, involved seven parties: the United States, United Kingdom, France, Germany, Russia, China, and Iran. Iran agreed to cap uranium enrichment at 3.67 percent, limit its enriched uranium stockpile to 300 kilograms, convert its Fordow facility into a research center, and accept expanded inspections by 130 to 150 IAEA inspectors. In exchange, the agreement provided for comprehensive lifting of UN Security Council sanctions along with related multilateral and national sanctions.8European Parliament. Joint Comprehensive Plan of Action The JCPOA showed that multilateral diplomacy could produce detailed technical agreements on sensitive security matters. The United States withdrew from the deal in 2018, and efforts to revive it have stalled.
Crisis Diplomacy and Mediation
Diplomacy under pressure looks different from the slow grind of treaty talks. Article 33 of the UN Charter directs parties to any dispute that could endanger international peace to first seek a solution through negotiation, mediation, conciliation, arbitration, or judicial settlement.9United Nations. Chapter VI – Pacific Settlement of Disputes Three examples show what that looks like in practice.
The Cuban Missile Crisis
The October 1962 Cuban Missile Crisis remains the closest the world has come to nuclear war. After U.S. reconnaissance discovered Soviet nuclear missile installations under construction in Cuba, President Kennedy imposed a naval quarantine and demanded their removal. The resolution came through back-channel negotiations, primarily between Attorney General Robert Kennedy and Soviet Ambassador Anatoly Dobrynin. The deal had two components. Publicly, the Soviets agreed to withdraw their missiles in exchange for a U.S. pledge not to invade Cuba. Privately, the United States committed to removing its Jupiter missiles from Turkey within four to five months. The Turkey arrangement was kept secret because, as Robert Kennedy explained, a public announcement would damage the entire structure of NATO.10National Security Archive. The Cuban Missile Crisis, 1962 – Anatomy of a Controversy Back-channel communication and face-saving concessions mattered as much as any formal exchange.
The Camp David Accords
Signed on September 17, 1978, the Camp David Accords are the textbook example of third-party mediation. Egyptian President Anwar Sadat and Israeli Prime Minister Menachem Begin spent thirteen days at Camp David with President Jimmy Carter, who personally mediated between them.11Office of the Historian. Camp David Accords and the Arab-Israeli Peace Process The result was two frameworks: one outlining a path toward broader Middle Eastern peace with transitional arrangements for the West Bank and Gaza, and another setting the terms for an Egyptian-Israeli peace treaty to be concluded within three months.12The Avalon Project. Camp David Accords The peace treaty was formally signed on March 26, 1979, making Egypt the first Arab nation to recognize Israel.
The Dayton Agreement
The 1995 General Framework Agreement for Peace in Bosnia and Herzegovina, negotiated at Wright-Patterson Air Force Base in Dayton, Ohio, ended three and a half years of war. The agreement divided the country into two entities, the Bosniak-Croat Federation and the Republika Srpska, established a central government with a rotating presidency, guaranteed freedom of movement, and authorized an international peacekeeping force to oversee implementation. It also included provisions on human rights, the return of refugees, and the establishment of a UN International Police Task Force. Dayton showed that a diplomatic framework can end active warfare, though the complexity of governing a country carved along ethnic lines has generated challenges that persist decades later.
Judicial Settlement Through the International Court of Justice
When negotiation reaches an impasse, states can take a legal dispute to the International Court of Justice, the principal judicial organ of the United Nations. The Court’s jurisdiction is strictly consent-based: no nation can be brought before it against its will.13International Court of Justice. Basis of the Court’s Jurisdiction
Consent takes several forms. Two states can refer a specific dispute through a special agreement. Jurisdiction can also arise from treaty clauses designating the ICJ as the forum for interpretation disputes. Some states accept compulsory jurisdiction, agreeing in advance to be subject to the Court’s authority for any legal dispute with another state that has made the same commitment. Even without prior consent, a state can accept jurisdiction after a case is filed. When the parties disagree about whether the Court has jurisdiction at all, the Court itself decides the question.13International Court of Justice. Basis of the Court’s Jurisdiction
Trade Agreements as Diplomacy
Trade agreements are diplomacy applied to commerce, harmonizing regulations, reducing tariffs, and creating mechanisms to resolve disputes. The United States-Mexico-Canada Agreement entered into force on July 1, 2020, replacing NAFTA. Chapter 31 establishes a state-to-state dispute settlement process: if consultations fail to resolve a disagreement within 75 days, or 30 days for perishable goods, the complaining party can request a panel. If the panel finds a violation, the parties have 45 days to agree on a resolution, which can include eliminating the violation, providing compensation, or another agreed remedy. If a party refuses to comply, the other side can suspend trade benefits.14United States Trade Representative. Chapter 31 – Dispute Settlement
The USMCA also introduced a Facility-Specific Rapid-Response Labor Mechanism between the United States and Mexico. It allows expedited enforcement of workers’ rights to free association and collective bargaining at individual workplaces rather than only at the national level. If a facility is found to be denying those rights, the consequences include suspension of USMCA tariff benefits and, for repeat offenders, denial of entry for goods from that facility.15United States Trade Representative. Chapter 31 Annex A – Facility-Specific Rapid-Response Labor Mechanism It is the first trade agreement mechanism that can target a single factory rather than treating compliance as an abstract national obligation.
Economic Sanctions
Sanctions sit at the intersection of diplomacy and coercion. The UN Charter authorizes the Security Council to impose measures like the interruption of economic relations as alternatives to military force.6United Nations. Chapter VII – Action with Respect to Threats to the Peace, Breaches of the Peace, and Acts of Aggression Individual nations also impose their own.
The United States runs the largest unilateral sanctions regime in the world through the Treasury Department’s Office of Foreign Assets Control. OFAC administers programs targeting specific countries, entities, and individuals, and penalties are substantial. In the first three months of 2026, OFAC imposed over $6.6 million in civil penalties across three enforcement actions, with the largest single penalty reaching $3.77 million.16U.S. Department of the Treasury. Civil Penalties and Enforcement Information Those financial consequences are what give sanctions their coercive force.
Whether sanctions succeed as a diplomatic tool is genuinely debated. Comprehensive sanctions on Iran helped bring the country to the JCPOA negotiating table, suggesting economic pressure can drive diplomatic outcomes. Sanctions on Russia following the war in Ukraine have produced a more mixed picture, with targeted nations developing alternative financial systems and illicit trade networks to circumvent restrictions. Sanctions tend to work best when they are multilateral, well-enforced, and paired with a clear off-ramp that gives the targeted country a reason to change course.
Diplomatic Immunity Under the Vienna Convention
None of the diplomacy above would function without a legal guarantee that diplomats can operate in foreign countries without fear of arrest or interference. The Vienna Convention on Diplomatic Relations, adopted in 1961, provides that framework. Its preamble states that diplomatic privileges and immunities exist not to benefit individuals but to ensure that missions can function effectively as representatives of their home states.17United Nations Treaty Series. Vienna Convention on Diplomatic Relations 1961
The protections are sweeping. Article 29 declares that a diplomatic agent is inviolable and may not be arrested or detained under any circumstances, and the host country must take all appropriate steps to prevent attacks on a diplomat’s person, freedom, or dignity. Article 31 grants diplomats full immunity from criminal prosecution in the host country, along with immunity from most civil lawsuits, with narrow exceptions for private real estate disputes, inheritance matters, and commercial activities outside official duties. A diplomat cannot even be compelled to testify as a witness.17United Nations Treaty Series. Vienna Convention on Diplomatic Relations 1961 Article 27 extends similar protection to diplomatic communications: pouches may not be opened or detained, and the United States considers even X-ray inspection a serious breach.18U.S. Department of State. Diplomatic Pouches Without that guarantee of confidentiality, no government would share sensitive positions.
Public and Cultural Diplomacy
Not all diplomacy happens between governments. Public diplomacy targets foreign populations directly, using culture, education, and communication to build the long-term goodwill that makes formal negotiations easier.
The Fulbright Program, founded in 1946, is the U.S. government’s flagship international academic exchange, operating in partnership with more than 160 countries. Its stated goal is to increase mutual understanding and support peaceful relations between Americans and people of other countries.19Fulbright Program. About the Fulbright Program The program sends scholars, students, and professionals abroad while bringing their foreign counterparts to the United States.
The International Visitor Leadership Program takes a different approach. IVLP brings current and emerging foreign leaders in government, business, and academia to the United States for short professional visits of up to three weeks. There is no application process; participants are nominated by U.S. embassies based on their leadership potential and relevance to U.S. foreign policy priorities.20Exchange Programs. International Visitor Leadership Program (IVLP) Hundreds of current and former heads of state are alumni.
Cultural diplomacy has also taken more targeted forms. Beginning in 1956, the State Department sent American jazz musicians abroad as Jazz Ambassadors during the Cold War. Artists like Dizzy Gillespie, Louis Armstrong, Duke Ellington, and Sarah Vaughan performed internationally while the Voice of America broadcast jazz programming to millions via shortwave radio. The program was designed to counter Soviet propaganda by projecting American values of creativity and free expression, though it also drew attention to the racial inequities those same artists faced at home.21U.S. Department of State. Jazz Diplomacy – Then and Now The story a country projects abroad eventually gets measured against domestic reality.