Pope Leo XIV

Pope Leo XIV became the 267th Bishop of Rome in May 2025, the first pope born in the United States, entering the papacy as the 2026 Iran-Israel war entered its most perilous phase. On 13 April 2026 he condemned US President Donald Trump's war rhetoric as "truly unacceptable" and warned against what he called a "delusion of omnipotence" among world leaders, prompting Trump to retaliate on Truth Social by calling the pontiff "terrible for Foreign Policy" and falsely claiming Leo XIV supported a nuclear-armed Iran.

Born Robert Francis Prevost in Chicago and formerly a missionary bishop in Peru, Leo XIV was elected by the conclave following the death of Pope Francis in March 2025. He is a member of the Augustinian order. His election was historically significant not only for his American birth but because US-born candidates had long been informally excluded from consideration given the outsized geopolitical weight of the United States in global affairs. Vatican diplomacy under Leo XIV has maintained the Church's traditional humanitarian and peace-advocacy positions, which put him on an immediate collision course with the Trump administration's hawkish posture on Iran.

The papal rebuke carried unusual weight in 2026 because of Leo XIV's nationality: an American pope criticising American policy removes the easy dismissal of foreign interference. It reverberated across Catholic-majority Latin American and European nations, reinforcing a diplomatic isolation of the US position that had already seen the UK, Germany, and Australia refuse to join the Hormuz blockade. The episode illustrated how the Iran war was generating ruptures not merely among treaty allies but within shared cultural and religious communities.