With Trump warning of a last chance for “the worst deal ever negotiated”, Britain, France and Germany have begun talks on a plan to satisfy him by addressing Iran’s ballistic missile tests and its regional influence while preserving the 2015 accord that curbed Iran’s nuclear ambitions for at least a decade. It is hard to say what might mollify the Trump administration, which is split between those who would like to tear up the agreement and those who wish to preserve it and which has said inconsistent things about its demands to keep the accord, U.S. and European officials said. Under U.S. law, Trump must decide again whether to renew the U.S. sanctions relief every 120 days, giving Congress, as well as U.S. and European diplomats, until mid-May to see if there is a way to finesse the issue. But the Brussels meeting has left European powers wary that whatever they agree, it may not be enough.