At least 13 people were killed in Iraq on the eve of the third anniversary of the US-led invasion, as US and Iraqi leaders sought to play down the threat of a civil war. Anti-war demonstrations were gearing up across the world as hundreds of thousands of Shiite pilgrims converged on the holy city of Karbala to commemorate Arbayeen, or 40 days since the martyrdom of Imam Hussein in the 7th century, on Monday. Full Story