"...Seriously. American military intervention has been an incredible boon to global liberty. We fought and defeated the Axis powers in WWII, bringing liberty back to conquered Western Europe and giving it to Japan and Germany as well. We helped ensure that liberty would thrive via the Marshall Plan. We fought in the Korean War and have seen from that great natural experiment how valuable our intervention was. Indirectly via the cold war, we contributed to the demise of the Soviet Union and the spread of liberty in Eastern Europe. OK, Vietnam didn't turn out well, but the comparison to Korea shows that maybe we should have tried harder?? Iraq has not gone well either, but it's not over till the fat lady sings right?..."