From the Washington Post:
Iranian Foreign Minister Mohammad Javad Zarif made a surprise visit to the city hosting the Group of Seven summit Sunday, a move that caught President Trump off-guard and added another element of tension to the meeting of world economic leaders.
Zarif’s arrival in Biarritz appeared to be a covert initiative by French President Emmanuel Macron, a senior European official said, and other leaders were not informed ahead of time. There was no immediate plan for the Iranian foreign minister to meet anyone other than French officials, officials said.
When asked to comment on Zarif’s surprise visit, Trump replied, “No comment.”