<span style="color: #222222;">The US special envoy for Iran, Brian Hook is meeting with French, German and British top diplomats in Paris for talks on the Persian Gulf crisis at a time when European powers are trying to save the 2015 nuclear deal struck with Tehran. <br />'' <br />'' European countries want to avoid a further escalation in tensions between the U.S. and Iran and are trying to convince Iran not to leave the nuclear deal, which the U.S. pulled out of last year.<br />'' <br />'' Iran has said it will break out of the nuclear deal's limit on its stockpiles of low-enriched uranium following the re-imposition of U.S. sanctions.<br />'' <br />''<br />''Yesterday, Iran's U.N. ambassador urged Britain, France and Germany to take timely practical steps to preserve the agreement which is now in critical condition.</span>