US dare not cross 17th parallel ?? Idiot propaganda. How did US bomb Ha Noi by super bomber B52, VN capital if they didn't cross 17th parallel??
Not mentioning we didn't ask help from CN, we ask help from Soviet and Stalin forces Mao to support VN bcs CN owed Soviet a huge debt after CN civil war.
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In January 1950, Moscow belatedly recognised Ho Chi Minh and the Viet Minh as the ‘official’ rulers of Vietnam. Ho Chi Minh journeyed to Moscow and sought Soviet military backing for his war of independence against the French. Stalin, whose attentions were concentrated on Europe, rejected his overtures. Instead, Stalin encouraged his communist ally, Mao Zedong, to support the Viet Minh.
Across the border to the north, Chinese and Soviet involvement in Vietnam was also building. Their support strengthened North Vietnam and the Viet Cong.
alphahistory.com