ALGIERS, April 14 -- Pope Leo XIV said on Monday he had "a moral duty" to speak out against war and didn't "fear" President Donald Trump while the US leader criticised his calls for an end to the conflict in the Middle East. Before taking off from Rome headed to Algiers for a papal visit, the pontiff came under fire from Trump. The US president railed against Leo's recent comments calling for peace in the Middle East, which is grappling with the war triggered by a joint Israel-US attack on Iran in late February. Trump later doubled down on criticisms, saying there was "nothing to apologise for". "Pope Leo said things that are wrong," Trump said. "He was very much against what I'm doing with regard to Iran, and you cannot have a nuclear Iran...