France cut off US ambassador Charles Kushner’s contact to French government officials after he failed to show up for a summons over US State Department comments about the killing of a far-right activist in Lyon. “In light of this apparent failure to grasp the basic requirements of the ambassadorial mission and the honour of representing one’s country,” France’s foreign minister Jean-Noel Barrot “has requested that he no longer be allowed direct access to members of the French government,” the ministry said in a statement late on Monday. The restriction on Kushner marks an unusual rebuke between long-standing allies. It was...