U.S. envoy says returning to Vienna in hope of reviving Iran nuclear pact

WASHINGTON (Reuters) - U.S. Special Envoy for Iran Robert Malley on Sunday said he would soon return to Vienna for the next round of talks on returning to the 2015…

U.S. envoy says Iran nuclear deal effort is at ‘critical phase’

By Arshad Mohammed and Humeyra Pamuk WASHINGTON (Reuters) -Efforts to revive the 2015 Iran nuclear deal are at a "critical phase" and Tehran's reasons for avoiding talks are wearing thin,…

U.S. to discuss way forward on Iran in Moscow, Paris talks

By Arshad Mohammed WASHINGTON (Reuters) -U.S. Special Envoy for Iran Robert Malley will visit Moscow and Paris this week for talks with Russian and European officials on Iran's nuclear program,…