Myanmar was not only a ‘fragile state’ by most definitions during the 1990s and 2000s, but was concurrently isolated as an international ‘pariah’. The complexity of this paradoxical combination of poverty, fragility, pro-economic growth polity and international isolation created an enigmatic context for international agencies, and one in which existing frameworks for development in ‘fragile states’ do not appear overly relevant. Nonetheless, Myanmar experienced a surprising level of development activity, with equally surprising signs of effectiveness. This paper explores this activity, identifying actors, roles, approaches, and modalities of interaction with structures and authorities found to be most effective. The paper is divided into four sections, offering an overview of the historical context, summarising field observations, considering the effectiveness of interventions, and discussing these observations in the light of fragile state policy.