Why does the United States go around picking fights and then go around maintaining world peace? Aren't they tired of that? I don't understand!

The whole world is a big cake for the United States, and the United States "stirs up trouble everywhere" in order to "chew". The purpose of "maintaining peace" is to "swallow slowly".

The world pattern after World War II, as well as the Cold War and (local) hot war (for example: the Korean War, the Vietnam War, etc.) so that the Americans understand a truth: Although the United States has become the world's largest, but it wants to one-time completely knock down its strategic rivals is also very difficult (or even impossible). So it had to take its time in an organized manner. And this through the Gulf War since the beginning of the successive wars initiated by the United States is enough to prove: the United States of America every war, its opponents will be compressed back a little bit, while the United States of America's own "tentacles" is a little bit of extension of the forward until the opponent's door, so that the other side can not retreat, and ultimately in the United States of America's "siege" under the complete collapse. The final collapse of the United States under the "encirclement". This is the real purpose of the U.S. "self-directed"!