who has the power to make treaties with foreign nations
Treaty Clause Article II, Section 2, Clause 2 of the United States Constitution, includes the Treaty Clause, which empowers the president of the United States to propose and chiefly negotiate agreements, which must be confirmed by the Senate, between the United States and other countries, which become treaties between the United States and other countries after the advice and consent of a supermajority of the United States Senate.
Treaty on the Non-Proliferation of Nuclear Weapons Five states are recognized by NPT as nuclear weapon states (NWS): China (signed 1992), France (1992), the Soviet Union (1968; obligations and rights now assumed by the Russian Federation), the United Kingdom (1968), and the United States (1968). These five nations are also the five permanent members of the United Nations Security Council.