The 150 uniformed US troops still in Iraq are there to facilitate weapons sales and train Iraqi forces to use the armaments. But as violence rises in Iraq since the US military pullout, some analysts see greater risks that US-supplied weapons may be misused.
Returning home at the end of the Iraq mission is not all 'cotton-candy clouds and unicorns' for some US troops. They now have to face financial and family problems at home or the rising risk of being cut by a downsizing military.
The RQ-170 Sentinel drone lost over Iran is one of America's most valuable intelligence assets. It's unclear what brought it down - hostile fire or malfunction. Iran claims to have shot it down but has provided no photographs.