In the uncertain weeks following Sept. 11, an internal power struggle was underway deep inside the Bush administration. Waged between partisans at the highest levels of the government, that battle — captured in a series of blunt memos — exemplifies the struggle to create a legal framework to give the president authority to aggressively interrogate enemy fighters in the war on terror. FRONTLINE goes behind closed doors to investigate the struggle over how and when to use what was called “coercive interrogation.” [Explore more stories on the original website for The Torture Question.]