Four US troops killed in Iraq

Insurgents killed four American soldiers and wounded four more in separate attacks in Baghdad, the US military said yesterday.
Three soldiers were killed and two wounded by an explosively-formed penetrator, which is a bomb the US military alleges is supplied to Iraqi extremists by Iranian-linked groups.
The bomb struck the soldiers' patrol in east Baghdad on Tuesday, the military said in a statement.
Another soldier was killed and two more wounded during combat operations in a western Baghdad area on Tuesday.
The latest fatalities took the military's losses in Iraq since the March 2003 invasion to 3,736, according to an AFP count based on Pentagon figures.