The United Nations Security Council arms embargo on Iran formally expires. It had been in effect since 2007 and was due to expire under the 2015 Joint Comprehensive Plan of Action. Iranian Foreign Minister Mohammad Javad Zarif says, "Today's normalization of Iran's defense cooperation with the world is a win for the cause of multilateralism and peace and security in our region".
Denmark calls on the European Union for new sanctions against Iran after Danish security services accused the Iranian intelligence service of plotting an assassination of an Iranian activist on Danish soil. Copenhagen also recalls its ambassador to Tehran.
Iran releases four Iranian-American prisoners including "Washington Post" reporter Jason Rezaian and Christian pastor Saeed Abedini. The United States is to release seven Iranian-Americans held in the United States for violating sanctions against Iran.
Iranian President Mahmoud Ahmadinejad says the International Atomic Energy Agency report is based on "empty claims" and that Iran would not budge from its nuclear program despite allegations it may be trying to develop nuclear weapons; European countries and the US say they will consider fresh sanctions against Iran.
The U.S. Pentagon alleges that Iran has violated United Nations sanctions against itself by providing an advanced radar system to Syria, a system the Pentagon claims would hurt Israel's ability to launch surprise attacks against Iran.