It takes too long for most to read about geopolitics and the Vietnam generation is still with us and have never gotten over the lies told to the nation at that time. It's understandable but regretable.
As for Europe, they have turned a blind eye to more atrocities than anyone but always seem to expect us to risk our treasure to fix it all for them and blame us when it doesn't go exactly according to plan.
My first question when meeting someone from Europe is: Are you from the part of Europe whose arse we saved or whose arse we kicked? The conversation can proceed from there (or not).