Vietnam’s premier on Thursday hit out at the “barbarous crimes” of its war time American foe as the nation marked four decades since the fall of Saigon, an event that delivered a communist victory and a painful blow to US moral and military prestige. The central streets of southern Ho Chi Minh City- formerly Saigon- were filled with a forest of hammer and sickle flags of the Communist Party, as regiments of goose stepping soldiers filed past the country’s top leaders. In front of Independence Palace, Prime Minister Nguyen Tan Dung struck out at the US attempt to contain the spread of communism in southeast Asia through war in Vietnam. “They committed countless barbarous crimes, caused immeasurable losses and pain to our people and country,” he said in an address. The war killed millions of Vietnamese- both civilians and combatants from the divided North and South- and left hundreds of thousands more wounded.