Pope Leo has said he has never supported nuclear weapons and that those who criticise him need to speak the truth, in response Donald Trump’s latest tirade accusing him of “endangering a lot of Catholics” with his stance on the Iran war. Speaking to journalists on Tuesday night after leaving the papal retreat in Castel Gandolfo, near Rome, the first US-born pontiff said: “The mission of the church is to preach the gospel, to preach peace.” Leo, who is to meet the US secretary of state, Marco Rubio , in the Vatican on Thursday in an effort to ease tensions sparked by previous Trump broadsides, made a plea for honesty in political debate. “If anyone wants to criticise me for proclaiming the gospel, let them do so with the truth: the church has spoken out against all nuclear weapons for years, there is no doubt about that,” the pope said.…