In the same way Afghanistan, Iraq and Libya are "rebuilding"?
The Afghans fight more fiercely than ever. Just the other day we witnessed major coordinated assaults on several NATO strongholds, of magnitude not seen in years. And don't forget assaults on western embassies every couple of months. Iraq is no different whereas insurgence shows no signs of cessation. And Libya, a ruin seeded with DU, it's people forgotten by the West.
I can think of no other.
If by "relative peace" you mean "no World War" I'd agree. What you say entirely depends on location.
Hegemony and a multipolar world are mutually exclusive. The rest of your sentiment would imply a Hegemonic Stability Theory, which in my opinion would - given time - look much like the movie "Matrix".
There's no reason for America not to stay, as long as it's leaders change their foreign policy.
Edited by SolarPlexus, 19 April 2012 - 11:38 PM.