On the one hand, yeah, you're right, I tend to be too aggressive and rude and I really shouldn't do that, especially on a forum like HN. I genuinely appreciate you telling me that.
On the other hand, let's not forget that this is a very, very strong accusation. It's easy to lose sight of that, since it sounds like the usual world-weary complaining on a forum, but the gist of the statement is that the American government is deliberately making up false pretexts for war and killing foreign citizens and American soldiers, not for national interest or even crude financial gain, but in order to "test" warfighting doctrine. That's something a cartoonishly evil movie villain would do. I'm hardly a fan of the US government's current management, to put it lightly, but if this behavior was true it would make Watergate look like jaywalking and justify mass impeachment at the very minimum. If someone's going to toss it out I'd like there to be something to back it up.