Alan Dershowitz and Michael Hayden versus Alexis Ohanian and Glenn Greenwald, with a video appearance by Edward Snowden.
The actual debate starts around minute 27 on the video. You may use your cursor to click ahead to it.
"The wealth of another region excites their greed; and if it is weak, their lust for power as well. Nothing from the rising to the setting of the sun is enough for them. Among all others only they are compelled to attack the poor as well as the rich. Plunder, rape, and murder they falsely call empire; and where they make a desert, they call it peace."
Tacitus, Agricola