Two of the most influential faith leaders in the world reached across a religious divide on Saturday to promote peace and unity in a historic meeting.Pope Francis, 84, the head of the world’s 1.2 billion Roman Catholics, and Grand Ayatollah Ali al-Sistani, 90, the spiritual leader of most of the world’s Shia Muslims, talked for almost an hour during the first ever papal visit to Iraq, the pontiff’s first trip abroad since the start of the Covid-19 pandemic.