Book excerpt: Transboundary haze has been a recurring problem in the Southeast Asian region since at least 1982. Why does this toxic form of air pollution still persist? Helena Varkkey, a Malaysian political scientist, has been studying this multifaceted problem for more than fifteen years. This book provides an ideal collection for those who want a clear but concise introduction to this complex issue. Its commentaries explore how often sensitive matters of ASEAN diplomacy, national interest or political patronage continue to stand in the way of clear skies in the region.