How far will Barack Obama go in taking on critics who say the United States has abandoned its role as the global champion of human rights? America's counter-terrorism measures after 9/11 - including targeted killings and indefinite periods of detention without trial - have angered many. Former President Jimmy Carter has said the US has now lost its moral authority as a result. Zeinab Badawi speaks to Jeh Johnson, the General Counsel of the US Defense Department, the Pentagon's top lawyer and a close ally of Barack Obama.(Image: Jeh Johnson. Credit: Brendan Smialowski/Getty Images)