A United Nations arms embargo on Iran has expired as planned under the nuclear agreement between Iran and world powers. The end of the embargo enables Iran to import and export conventional weapons under international law. However, the United States claims that the embargo remains in effect because U.S. diplomats triggered the "snapback" provision of the nuclear agreement under which all previous international sanctions on Iran, including the arms embargo, are reinstated. The U.N. Security Council rejected U.S. standing to trigger snapback and voted against an extension of the arms embargo. The United States has threaten to sanction any person or company that sell weapons to Iran. In 2019, a U.S. intelligence agency reported that Iran might seek to purchase Russian Su-30 fighter jets, Yak-130 trainer aircraft, and T-90 tanks as well as the Russian S-400 anti-aircraft missile system and Bastian coastal defense system.