China's communist revolution is in pretty much independant course from that of Europe. Though the changes of worldly political environment during early~mid 20th century did lead to certain expectations of Asia's communist revolution from the Russians, in actual course Soviet Russia and Communist China went very different ways, and they were always in an "uncomfortable" position to each other as "awkward allies". Though their self interest concerning the Korean peninsula has conjured an illusion of Sovier-Chinese coalition in the Korean war, spread of communism in Asia and Europe cannot be viewed as a singular, systematical and orderly plan to conquer the world.
Every new country that sprang up from the former colonies had two choices - follow the Western-sponsored path of centralized/dogmatic capitalist development, or follow the Russian-Chinese sponsored path of centralized/dogmatic socialist development. Considering that the "West" was to the people of the newborn states "former masters", and Comintern slogan of "anti-imperialism" was very appealing to those who were once under colonial rule, the spread of communism was more of a voluntary course rather than a result of an active ploy devised by either Stalin or Mao.
Neither Stalin nor Mao was in a position to directly challenge the West, and as pointed out earlier, Stalin was quite surprised to find out that his initial position in diplomatic discussions was much stronger than he thought. Therefore, it was naturally a good chance to firmly establish the concept of "Eastern European-Asian communist bloc", ensuring the survival of Russia's strong communist regime. In fact, this "bloc" concept was devised much earlier than Stalin even came to power, and can be considered almost a "traditional" Soviet Russian diplomatic goal after 1921, when the civil war left Russia in ruins, and the visions of world-wide revolution became dim. It was about then the Comintern agenda changed.
Onething for certain, ruthless or not, dictator or otherwise, Russia's leaders were never as aggressive as the West in the "expansion" of their "empire". Their initial position was defensive, and any later attempts to increase influence has been passive at best, with almost no success.
Then comes death of Stalin, and Kruschev. In a country under massive repression, facing an undeniable, inevitable state of 'clod war', cheesey and unreliable ally in the Eastern borders, and powerful contender/potential enemy at the Western gates, Kruschev was in dire need of strengthening his position or otherwise taking power in a dangerous situation like that is more than likely to become a death trap rather than a stairway to heaven. Thus, Soviet Russia's diplomatic agenda changed once more. Thus the really "colder" war begins.
Anyhow, 10 years after Soviet Russia has disappeared, things are now starting to look realllllly interesting