Iran pushed back on Friday on suggestions of extending a U.N. resolution that ratifies a 2015 nuclear deal as it began the first face-to-face talks with Western powers since Israel and the U.S. bombed it last month.

Iranian diplomats are meeting their counterparts from Germany, the United Kingdom and France for renewed nuclear talks, amid warnings that the three European powers could trigger “snapback” United Nations sanctions outlined under a previous 2015 deal.