On September 27, 2013, Obama spoke on the phone to Iran's President, Hassan Rouhani, which included talk about resolving the dispute over Iran's nuclear program.[298] By July 2014, Iran had accepted the limits imposed on a nuclear deal,[299] and by April 2015, a specific and comprehensively detailed nuclear outline had been agreed upon, in which Obama referred to as “a historic understanding with Iran.”[300] The Iran nuclear outline is an ongoing negotiation, but the White House is making all efforts to ensure that Iran does not have access to nuclear weapons.[301]