Based on the book by Christopher Hitchens and directed by Alex Gibney. That should be all you need to know.
The Trial of Henry Kissinger by Christopher Hitchens came out in 2001. In typical fashion, Hitchens reduces the man to ash with his perfunctory repertoire of wit and a wellspring of knowledge on seemingly, well, everything. Much like The Missionary Position or No One Left to Lie To, he tears through the mask of an uninformed easily awed public and sheds light on who these "people of greatness" truly are, which is anything but.
The film itself shows Hitchens organizing protests and demanding that Kissinger be put on trial for multiple war crimes including the massacre in Cambodia that led to the outbreak of the Khmer Rouge. As a documentary it works well enough and anyone who hasn't read the book will probably get more out of it than someone who has. So it goes when you try to tackle the work of a man whose vocabulary and intellectual prowess make for some of the finest writing
So I recommend it. If you have any knowledge of Kissinger, Nixon, or the Vietnam war you're sure to enjoy it and if you don't, it's a quick history lesson.
Check it out: The Trials of Henry Kissinger