A Minister of Foreign Affairs, or foreign minister, is a cabinet minister who helps form the foreign policy of a sovereign state. The foreign minister is often regarded as the most senior ministerial position below that of the head of government (prime minister or president).^{[citation needed]} It is often granted to the deputy prime minister in coalition governments. In some nations, such as India, the foreign minister is referred to as the Minister for External Affairs or, as in the case of Brazil and of the former Soviet Union, as the Minister of External Relations. In the United States the equivalent to the foreign ministry is called the Department of State, and the equivalent position is known as the Secretary of State.

A foreign minister's powers can vary from government to government. In a classic parliamentary system, a foreign minister can potentially exert significant influence in forming foreign policy but when the government is dominated by a strong prime minister the foreign minister may be limited to playing a more marginal or subsidiary role in determining policy. Similarly, the political powers invested in the foreign minister are often more limited in presidential governments with a strong executive. Since the end of World War II, it has been common for both the foreign minister and defense minister to be part of an inner cabinet (commonly known as a national security council) in order to coordinate defence and diplomatic policy. Although the nineteenth and early twentieth centuries saw many heads of government assume the foreign ministry, this practice has since become uncommon in most developed nations.

A country's foreign policy, also called the foreign relations policy, consists of self-interest strategies chosen by the state to safeguard its national interests and to achieve its goals within international relations milieu.^{[citation needed]} The approaches are strategically employed to interact with other countries. In recent times, due to the deepening level of globalization and transnational activities, the states will also have to interact with non-state actors. The aforementioned interaction is evaluated and monitored in attempts to maximize benefits of multilateral international cooperation. Since the national interests are paramount, foreign policies are designed by the government through high-level decision making processes. National interests accomplishment can occur as a result of peaceful cooperation with other nations, or through exploitation. Usually, creating foreign policy is the job of the head of government and the foreign minister (or equivalent). In some countries the legislature also has considerable oversight.