A foreign minister is the senior government official charged with formulating and executing a state's foreign policy. The role typically encompasses overseeing the diplomatic service, negotiating treaties, issuing instructions to ambassadors, representing the state at international organizations, and serving as the principal channel for government-to-government communication.
Under the Vienna Convention on Diplomatic Relations (1961) and customary international law, the foreign minister is one of three officials—alongside the head of state and head of government—who can bind the state externally without producing full powers (a principle reflected in Article 7(2) of the Vienna Convention on the Law of Treaties, 1969). This means signatures, declarations, and unilateral statements made by a foreign minister can create binding obligations, as the ICJ confirmed in the Arrest Warrant case (DRC v. Belgium, 2002), which also recognized that sitting foreign ministers enjoy full personal immunity from foreign criminal jurisdiction.
Titles vary by jurisdiction: Secretary of State (United States), Foreign Secretary (United Kingdom), Minister for Europe and Foreign Affairs (France), Minister of External Affairs (India), or High Representative in the EU context. The ministry itself is variously called the foreign ministry, chancery, or department of foreign affairs.
Key functions include:
- Setting bilateral and multilateral diplomatic priorities
- Heading delegations to the UN General Assembly's annual general debate
- Convening and attending ministerial meetings (G7, G20, ASEAN, OAS, etc.)
- Managing consular protection for citizens abroad
- Signing treaties and accession instruments
In parliamentary systems the foreign minister is usually a senior member of the governing party or coalition; in presidential systems the post is typically a presidential appointee. The political weight of the office varies—some foreign ministers operate with broad autonomy, while others execute policy tightly controlled by the head of government or a national security council.
Example
In 2015, Iranian Foreign Minister Mohammad Javad Zarif and US Secretary of State John Kerry led the negotiations that produced the Joint Comprehensive Plan of Action in Vienna.