A Sunni gunman takes cover during clashes between supporters and opponents of the Syrian regime, in the northern port city of Tripoli, Lebanon, Monday, Oct. 22, 2012. Lebanese troops launched a major security operation on Monday to open all roads and force gunmen off the streets, trying to contain an outburst of violence set off by the assassination of a top intelligence official who was a powerful opponent of Syria. Sectarian clashes overnight killed several people. (AP Photo/Bilal Hussein)
