Decolonisation was a policy of the West, as well as a process reflecting the radical transformation of the configuration of power in the international system. The Soviet Union, perceived as poised to dominate Eurasia, had to be ‘contained’ lest it expanded into the Rimland and challenged the West at sea. This geo-political obsession was reinforced by the ‘loss of China’ and the outbreak of the bitter struggle between North and South Korea. But the cold war was about ideology as well as military power, and containment was therefore not just a question of building pacts but of fostering the ‘right’ kind of political régimes.