We once tried to stay neutral. In not one but 2 world wars. Know what that taught us? That weather we stick our noses in or not we will still get the nose chopped off. So why care what other countries think? Do what needs to be done for the USA's best intrests and tell everyone else to F off.
Look at it this way. We have three choices that we could make regarding Iran, Afghanistan, and N. Korea.
1: Withdraw completely and ignore them or talk to them diplomatically.
2: Go in with guns ablazing. We're doing this now.
3: Nuke those areas.
Which would you prefer? FYI, number 1 is out as we got screwed already trying it.
Of course there is one more thing that we as a nation could do.
Withdraw completely from all the worlds bullcrap and when ever you holler for help ignore ya. Completely close all our borders only buying that which is needed to maintain ourselves till we find better avenues of being self sufficiant. Shoot anyone that crosses the borders into the US. Meanwhile we build up our infrastructure, advance our sciences and due to that concentration totally out strip the entire world technologically. Sharing none of it.
I'd vote for this one myself.