In her controversial, no-holds-barred expose Linda Polman shows how a vast industry has grown up around humanitarian aid. ''The Crisis Caravan'' takes us to war zones around the globe, showing how aid operations and the humanitarian world have become a feature of military strategy. Impassioned, gripping, and even darkly absurd, journalist Linda Polman ''gives some powerful examples of unconscionable assistance...a world where aid workers have become enablers of the atrocities they seek to relieve'' (''The Boston Globe'').