Luis Herrera Campins was elected to the presidency in 1979, with the country in deep debt and bound by International Monetary Fund demands. In 1983, the Venezuelan currency, the bolívar, was devalued on what became known as Black Friday, unleashing an economic crisis.[4] The subsequent government of Jaime Lusinchi did little to counter the crisis. Corruption increased, and the Caldas Corvettes crisis in 1987, sparked by a sovereignty dispute in the Gulf of Venezuela, generated one of the biggest moments of tension between Venezuela and Colombia.[5]