Taiwan, Japan, South Korea, Israel and everyone in NATO from Poland on west.
Yes, we're going through a rough patch because the US is (rightfully) sick of playing world police at the same time as China/Russia are on the up but to think that the US and all the other regionally relevant powers (e.g. NATO members for Europe) wouldn't retaliate against an attempt to annex territories in any of those countries is crazy. Also Panama and Egypt (who both have critical global shipping lanes) don't really have to worry about their sovereignty being violated by any nation that the first world would expect to restrict access to their shipping lanes.