What is the main issue talked about in the news item? [br] [originaltext] Re

Recent shootings of civilians have brought new attention to security companies working in Iraq for the United States government. (29) Private guards help protect diplomats, aid groups and even American forces.
    On Tuesday, guards from an Australian-owned company, Unity Resources Group, killed two women in a car in Baghdad. They say the car failed to stop after warnings. Earlier, the Iraqi government urged American officials to cut ties with Blackwater USA. Blackwater is the largest of three American companies protecting American diplomats in Iraq.