DAMASCUS, Syria — First of two parts A Syrian trading company with close ties to the ruling regime smuggled weapons and military hardware to Saddam Hussein between 2000 and 2003, helping Syria become the main channel for illicit arms transfers to Iraq despite a stringent U.N. embargo, documents recovered in Iraq show. The private company, called SES International Corp., is headed by a cousin of Syria's autocratic leader, Bashar Assad, and is controlled by other members of the president's Baath Party and Alawite clan. Syria's government assisted SES in importing at least one shipment destined for Iraq's military, the Iraqi...