Explanation: Vietnam spent several decades fighting against outside powers attempting to place a puppet regime over them - first the French, attempting to hold on to their colonial possessions; then the US, attempting to prop up an anti-communist military junta; then China, attempting to support Pol Pot in Cambodia by a scorched earth campaign in Vietnam.

Despite inflicting significant casualties on Vietnam, all three failed, and Vietnam maintained its independent posture.

They’re doing alright now.