Obama will not be alone. There will be people behind the curtain. Since the necons, who are having huge benefits from war, are there we shall not expect so much from US Government.

As we look to some resources:

Following the end of the Gulf War, the Pentagon, led by then Defense Secretary Dick Cheney, paid Halliburton subsidiary Brown & Root Services over $8.5 million to study the use of private military forces with American soldiers in combat zones.
Yeoman, Barry (2003-06-01). "Soldiers of Good Fortune", Mother Jones. Retrieved on 8 May 2007.

Rumsfeld defended the Bush administration's decision to detain enemy combatants without protection under the Third Geneva Convention. There was therefore a large amount of pressure from many American organizations and international bodies to enforce the Geneva Conventions. Because of this, critics would hold Rumsfeld personally responsible for the Abu Ghraib torture and prisoner abuse scandal. Rumsfeld himself said, "These events occurred on my watch as secretary of defense. I am accountable for them."[http://edition.cnn.com/2004/WORLD/meast/05/09/iraq.abuse.main.int/] US military investigations into the matters did not find him responsible for any wrongdoing.

"What doesn't kill me; makes me stronger..."