Here’s a few links I found in a couple minutes of googling. The Vanity Fair interview with Cameron is particularly interesting because he makes the link himself between AVATAR and American policy in the Middle East.
http://www.military.com/entertainment/movies/movie-reviews/avatar-thrills-but-troops-take-hit
http://www.nypress.com/article-20710-blue-in-the-face.html
http://www.christianpost.com/article/20091221/avatar-rambo-in-reverse/index.html
http://www.vanityfair.com/online/oscars/2009/12/james-cameron-on-avatar.html
http://entertainment.timesonline.co.uk/tol/arts_and_entertainment/film/article6952427.ece