Iran’s foreign minister Mohammad Javad Zarif flew into the French resort hosting a G7 summit on Sunday.
It was an unexpected twist to an already problematic meeting between U.S. President Donald Trump and Western allies.
Reuters reports the seven countries differ over a raft of issues, including Iran.
Zarif is holding talks with his French counterpart.
Iran and France are trying to assess what conditions could lead to a de-escalation of tension between Tehran and Washington.