keywords: baghdad iraq syrians troops militants
text: Day of Violence Across Iraq Leaves 52 Dead BAGHDAD, Iraq - A suicide car bomber slammed into a line of police cars sealing off a Baghdad neighborhood Friday as American troops rounded up dozens of suspected militants, capping a day of violence across Iraq that left at least 52 dead.    Among the 63 suspects arrested were Syrians, Sudanese and Egyptians, officials said...