The leaders of France, Germany and Russia agree to work on a peace plan to be put to the President of Ukraine Petro Poroshenko on Sunday.
The United States Secretary of State Mike Pompeo declares the 2015 nuclear accord with Iran as no longer in force. He also warns that the United States "is prepared to use our domestic authorities to impose consequences" for other countries that do not enforce the sanctions. Britain, France, Germany, China, and Russia oppose the snapback sanctions.
Iranian President Hassan Rouhani sends letters to the P5+1 leaders of the United Kingdom, China, Russia, Germany, France and the European Union announcing the country's partial withdrawal from the 2015 Joint Comprehensive Plan of Action agreement. Furthermore, Iran announces that it will stop exporting uranium and heavy water from its nuclear program.
U.S. President Donald Trump and Ukrainian President Petro Poroshenko, in a telephone call, discuss strengthening the two countries' strategic partnership with particular attention to the conflict in the Donbass, a Ukrainian region that borders Russia.
Former Secretary General of NATO Anders Fogh Rasmussen is named an advisor for Ukrainian President Petro Poroshenko, a move described by a Russian deputy chairman of the Foreign Affairs Committee as a "hostile gesture".
Iran is invited to attend the next round of talks over Syria's future, along with the representatives from the United States, Russia, Saudi Arabia, Turkey, Britain, France, Germany, Jordan, the United Arab Emirates, and the United Nations mediator for Syria, Staffan de Mistura. The next round of the "Vienna II" meeting is expected to start tomorrow and continue Friday in Vienna, Austria.
The UN Security Council fails to agree a statement to condemn the killing of Syrian protesters, as Russia and China block a statement proposed by Britain, France, Germany and Portugal that would have condemned the violence, which has led to hundreds of dead, and backed calls for an independent investigation.