An interesting thought that popped into my head today.
So, first off, the scenario: the Sino-Soviet border confict of 1969 spirals into full-blown war. The Chinese fight hard, but in the end the Soviets just blow them to smithereens.
But, the million-dollar question is: what effects would this have on the Vietnam War? Who would the North Vietnamese support? Would the South have been in a better condition?