kerry and iranian foreign minister mohammad javad zarif met monday for the first time since world powers and iran sealed a framework agreement on april 2 .
they now have little more than two months to meet their own deadline of june 30 to sign a comprehensive accord , which hinges on both sides coming to an agreement on the timing of sanctions relief .
the obama administration moved on two fronts today to advance its nuclear diplomacy with iran , with talks between top u.s. and iranian diplomats at a united nations conference in new york .