PARIS (AP) — France on Friday urged Iran to curb nuclear activities of “unprecedented gravity” as U.S. and European envoys met to discuss efforts aimed at reviving the troubled 2015 Iran nuclear deal. U.S. envoy Robert Malley joined counterparts from France, Britain and Germany at the meetings in Paris, at what the French Foreign Ministry called a “critical time” in efforts to salvage the accord. “It is urgent and crucial for Iran to end the activities of unprecedented gravity that it is conducting in violation of the (agreement) and to immediately resume full-fledged cooperation” with the International Atomic Energy Agency, Foreign Ministry spokesperson Anne-Claire Legendre said in an online briefing.