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)
