It is a commonplace that European rule contributed both to the consolidation of the nation-states of Southeast Asia and to the aggravation of disputes within them. Since their independence, Burma, Cambodia, Indonesia, Laos, Malaysia, the Philippines, and Vietnam have all faced the upheavals of secessionism or irredentism or communalism. Governments have responded to threats of fragmentation by appeals to national ideologies like Sukarno's pancasila (five principles) or Ne Win's ‘Burmese way to socialism’. In attempting to realise unity in diversity, they have paraded a common experience of the struggle for independence from colonial rule as well as a shared commitment to post-colonial modernisation. They have also ruthlessly repressed internal opposition or blamed their problems upon the foreign forces of neocolonialism, world communism, western materialism, and other threats to Asian values. Yet, because its effects were uneven and inconsistent while the reactions to it were varied and frequently equivocal, the part played by colonialism in shaping the affiliations and identities of Southeast Asian peoples was by no means clear-cut.