Unless I'm missing something, the author is angry because:
- The US only defends its own interests, not necessarily those of other countries
- The US press didn't publish articles about how much collateral damage occurred during the campaign
The first point is true. The second is false (I remember getting angry at some of the articles that criticised the amount of civilian damage).
The author has no legitemate gripe. He's trying as hard as he can to justify his hatred for the US.