Russia slams US assertion that it remains party to Iran nuclear deal

Russia’s UN ambassador slammed the United States on Tuesday as “ridiculous” for arguing it was still a member of the Iran nuclear deal two years after it quit, so Washington could trigger a return of all United Nations sanctions on Tehran.

The United States, Russia, China, Germany, Britain and France in 2015 agreed to the deal with Iran that prevents Tehran from developing nuclear weapons in return for sanctions relief...