I think there's a difference between living scared and living...I guess pragmatically. I'm not worried that e.g. Russia is going to drop a missile into midtown

I think there's a difference between living scared and living...I guess pragmatically. I'm not worried that e.g. Russia is going to drop a missile into midtown Manhattan, but I do acknowledge that there are real threats in the world and - for the moment at least - we can't all just get along. If the United States changed its military posture tomorrow to be strictly isolationist and brought every soldier home, someone else would step into the void. That may not necessarily be a bad thing, but it would be a different thing and at this point few people are seriously interested in finding out what kind of thing it would be.