BAGHDAD, Iraq - The governor of the Baghdad region, known for cooperating closely with American troops, was assassinated along with six bodyguards as he drove to work Tuesday in yet another bloody day of insurgent attacks that exposed grave security flaws in Iraq (news - web sites) with elections less than a month away. Other assaults Tuesday killed five American troops as well as 10 Iraqi commandos, bringing the death toll in the last three days to more than 70. Despite the violence, which U.S. troops and Iraqi security forces have been helpless to prevent, American and Iraqi leaders insist...