Who is the antagonist in Three Cups of Tea: One Man's Mission to Fight Terrorism and Build Nations-- One School at a Time by Greg Mortenson?

Mohammed Ali Changazi is one of the antagonists in Mortenson's, Three Cups of Tea: One Man's Mission to Fight Terrorism and Build Nations-- One School at a Time. Changazi is self-serving and manipulative..... he takes advantage of Greg by misusing supplies.