Britain's Middle East minister Andrew Murrison will visit Iran on Sunday for "frank and constructive" talks, the Foreign Office said, amid escalating tension between Tehran and Washington after the downing of an unmanned U.S. drone.
"At this time of increased regional tensions and at a crucial period for the future of the nuclear deal, this visit is an opportunity for further open, frank and constructive engagement with the government of Iran," the Foreign Office said in a statement.