Leo undertook the tour "in a spirit of reflection and listening, with deep respect for the place and for the faith of those who gather there in prayer," the Vatican said.

Pope Leo tells U.S. youth that AI should be used responsibly to support learning, warning against using it to do homework, while emphasizing that faith should not be politicized.

Pope Leo celebrated mass in Istanbul with Turkey's Catholic community on Saturday. He also visited the famous Blue Mosque to address peace and unity across faiths. Chris Livesay has more.

On his first overseas trip, the pontiff repeats his predecessor’s warning of a “Third World War fought piecemeal” and appeals for global dialogue. The pope was speaking in Turkey where he will spend three days before travelling on to Lebanon,