How Diplomacy Works

Diplomacy is how states communicate and negotiate without resorting to force. It's the everyday machinery of international relations — ambassadors, embassies, treaties, summits, and the thousands of negotiations happening at any given moment.

The Diplomatic Toolkit

• Embassies and consulates — permanent diplomatic missions in foreign capitals. The US has embassies in over 170 countries. Embassy staff enjoy diplomatic immunity under the 1961 Vienna Convention — they can't be arrested or prosecuted by the host country.
• Treaties — formal, binding agreements between states. They can be bilateral (two states) or multilateral (many states). The Treaty of Paris, the Geneva Conventions, the Paris Climate Agreement — treaties shape the rules of the international system.
• Summits — high-level meetings between heads of state. The G7, G20, UN General Assembly, and bilateral summits like US-China meetings set the agenda for global politics.
• Back-channels — informal, secret communication lines used when public diplomacy is politically difficult. The US and Soviet Union used back-channels extensively during the Cold War.

Modern Diplomacy

Diplomacy has evolved dramatically:

• Multilateral diplomacy — most major issues are now negotiated in multilateral forums (UN, WTO, COP climate summits) rather than bilaterally
• Public diplomacy — states now communicate directly with foreign publics, not just governments (cultural exchanges, media campaigns)
• Digital diplomacy — leaders communicate via social media, sometimes announcing major policy shifts on Twitter/X before informing their own diplomats
• Track II diplomacy — unofficial talks between academics, former officials, and civil society that can pave the way for formal negotiations (Oslo process for Israeli-Palestinian talks started as Track II)