The Waning Days of Petrocaribe? Central America and Caribbean Energy in Transition calls for greater attention to potential energy instability just off the shore and south of the border of the United States. It presents concrete policy proposals that the United States and international partners could implement to empower countries to accelerate the diversification of energy sources. Petrocaribe has receded in relevance during the low oil price cycle, but global market fluctuations demand that member-states double down on their energy transitions.