Two trips to Vietnam - in '68-69 then with my daughter in 2000 - convince me that this is true. Vietnam's economy and the explosive growth of Christianity there are thriving. It's aging communist leadership is increasingly being squeezed in the face of Vietnam's amazingly industrious populace.
Of course, if we don't win the WOT, all bets are off, because nothing will matter anymore anyway.
In the meantime however, if you think you must buy Chinese, consider the Vietnamese alternative first.
And if we had won the Viet Nam war, and by that I mean politically (we did win militarily), there would be no war on terror. Our lack of political resolve in SE Asia led directly to the current WOT.