In nightly sermons broadcast on the Internet, Sheik Omar Bakri Muhammad, a 47-year-old cleric born in Syria, has urged young Muslim men all over the world to travel to Iraq to fight on the front line of “the global jihad,” investigators say. He struck the same defiant tone earlier this month at a rally attended by 500 people at a central London meeting hall, where behind him a giant screen showed images of the World Trade Towers falling. “Allah akhbar!” some audience members shouted at the images, “God is greatest.” Full Story