MOSCOW. July 2 (Interfax) - Much headway has been made at the negotiations on reinstating the Iran nuclear deal, however, the U.S. return to this agreement will require the unconditional resumption of its every obligation, Russian Foreign Minister Sergei Lavrov said on Friday. "Indeed, the assessments made by the negotiating parties over the past month or even two, as long as the talks have been on, demonstrate significant progress. Lots of things have been coordinated, but not all of them," Lavrov said at a press conference in Moscow. "Speaking of a brief account of what has been obstructing the agreement,...