US Secretary of State Marco Rubio has left the Vatican after a lengthy meeting with Pope Leo on Thursday, amid tensions between the pontiff and President Donald Trump. Rubio spent around two and a half hours inside, first meeting the pope, then holding talks with senior Vatican officials, including Cardinal Pietro Parolin. Details of the meeting have yet to emerge, but it appeared to run longer than expected. Rift over the war in Iran Rubio sought to play down the  rift between Trump and Pope Leo ahead of his meeting with the leader of the Catholic Church. In remarks to reporters on Tuesday, Rubio said the trip was planned before Trump lashed out at the Pope for criticizing the war in Iran .…