Quote:I don't know if Khrushchev or Brezhnev fought hardest against China, however if they had tried to remove the distance between the "comrades" to concentrate on the capitalist world, things should have been better.
Agreed, although this would require actions from Mao's side as well. What really bothers me about the whole split is that it not only weakened the communist movement globally, but it created a lot of turmoil and suffering in China itself. For example, the disastrous Great Leap Forward, which insisted on communes and small scale industry instead of large enterprises and factories, was begun in part because Mao didn't want to follow the Soviet model of development and depend on Soviet aid and advisors. So to maintain 'independence' from an ally and fellow socialist nation, Mao destroyed the country's economic potential for a quarter of a decade.
Quote:I don't think there is someway the Soviet Union can keep good relationship with BOTH Vietnam and China : look at the history, Vietnam and China has been constantly fighting against each other since the 2nd BC century.
There was a period when the Vietnamese communists were given aid by the Chinese, and the threat of Chinese entry into the war was one of the reasons the US never invaded northern Vietnam during the Vietnam War. So I think that even though the Chinese and Vietnamese had a difficult history full of conflict, there is no reason to assume that relations had to remain strained forever. Look at the Soviet Union and East Germany for example: Russia and Germany had a history filled with conflict, but for a time the East Germans and the Soviets remained close friends and allies. Of course China's attack on Vietnam in 1979 ruined potential for improving relations over the short term though.
Quote:If the Soviet has to choose between us and the Chinese, they will surely maintain good relationship with the populous neighbor.
The Soviets did choose Vietnam over China historically. One of the conditions the Chinese put forward to the Soviets in the 1980s for the improvement of relations was for the Soviets to remove their military forces, bases and advisors from Afghanistan, Mongolia, and Vietnam. The Soviets could not adhere to this request because those three countries had governments committed to maintaining very close, friendly relations with the USSR, whereas China's requests would not necessarily lead to the same level of friendship and cooperation, but rather only a 'friendly neutrality'.