US secretary of state Marco Rubio is set to meet Pope Leo in a closely watched diplomatic visit on Thursday, as Washington attempts to repair strained relations with the Vatican following a series of public clashes between Donald Trump and the head of the Catholic Church. The Financial Times reports that the meeting comes amid escalating political and theological tensions over US foreign policy, immigration enforcement, and the war in Iran.
According to the Financial Times, Rubio’s visit to the Vatican was originally scheduled before the dispute between the White House and Pope Leo intensified, but has since taken on heightened significance. Rubio, a Catholic and son of Cuban immigrants, is expected to discuss issues including religious freedom and the political and humanitarian situation in Cuba, a long-standing point of engagement between the US and the Holy See.
The Vatican has historically played a mediating role between Washington and Havana, and the Financial Times notes that Rubio is also expected to explore potential church involvement in humanitarian aid delivery to Cuba. However, analysts cited by the Financial Times suggest that deep differences remain over how to address the island’s political crisis, with the Vatican favouring gradual transition and Washington facing internal debate over its approach.
Tensions between the White House and Pope Leo have escalated sharply in recent weeks, particularly following the US-Israeli military actions in Iran. The Financial Times reports that Pope Leo has openly criticised the conflict, questioning its moral justification under Catholic “just war” doctrine, and calling on US citizens to pressure lawmakers to end the bombing campaign. These interventions have drawn strong pushback from President Trump, who has repeatedly attacked the pope’s positions on foreign policy and immigration.
The Financial Times also highlights that Trump has directly criticised Pope Leo, calling him “weak on crime” and expressing hostility toward his stance on international affairs. Vice-president JD Vance has similarly warned the pope to “be careful” in his theological commentary, further deepening the public rift between the administration and the Vatican. Rubio, meanwhile, has echoed concerns about Iran’s nuclear ambitions, arguing that US policy aims to prevent nuclear proliferation in the region.
Pope Leo has rejected these characterisations, reiterating the Catholic Church’s longstanding opposition to nuclear weapons and defending his interventions as part of his global pastoral role. Speaking from Castel Gandolfo, he insisted that his comments reflect established church doctrine rather than political positioning, according to reporting by the Financial Times.
Observers cited by the Financial Times describe Rubio as one of the more diplomatically inclined figures in the Trump administration, suggesting his Vatican visit is aimed at stabilising relations rather than escalating confrontation. However, experts warn that bridging differences over Cuba, Iran, and migration policy may prove difficult, given the increasingly divergent positions of Washington and the Holy See.
The meeting also carries political significance ahead of upcoming US midterm elections, where Catholic voters remain an influential constituency. The Financial Times notes that while earlier relations between Washington and the Vatican were shaped by Cold War cooperation, particularly under Pope John Paul II, recent years have seen a widening ideological gap.
Despite tensions, Vatican officials quoted by the Financial Times suggest the meeting itself signals continued engagement rather than rupture. One senior church figure emphasised that the pope’s global moral authority cannot be easily dismissed, while analysts warn that underlying disagreements over war, migration, and nuclear policy are likely to persist beyond the visit.
