Britain, France and Germany have warned Iran against any further breaches of the international nuclear deal signed in 2015.<br />'' <br />'' The three European Union signatories to the deal have said in New York yesterday that they would trigger a special dispute mechanism if there were further violations.<br />'' <br />'' The UN nuclear watchdog has said Iran is using banned enrichment technology.<br />'' <br />'' The warning was issued at a meeting with Iranian Ministers on the fringes of the UN General Assembly. <br />''