As U.S. and Iranian officials held negotiations over Iran’s nuclear program in Geneva Tuesday, Iran temporarily closed parts of the Strait of Hormuz, a key international waterway through which 20% of the world’s oil passes. Supreme Leader Ayatollah Ali Khamenei warned, “The strongest army in the world might sometimes receive such a slap that it cannot get back on its feet.” Tehran’s foreign minister cautioned that more work still needs to be done on reaching a nuclear deal, but expressed some optimism about the negotiations.

Abbas Araghchi: “I can say that in this round there were quite serious discussions and a more constructive atmosphere than in the previous round. Various ideas were raised, and these ideas were seriously discussed. And finally, we were able to reach a general agreement on a series of guiding principles. From now on, we will move based on those principles and enter into the text of a possible agreement.”