Esguerra-Bárcenas Treaty

The Esguerra-Bárcenas Treaty was signed between Colombia and Nicaragua on 24 March 1928. Under the terms of the treaty, Nicaragua recognized Colombia's sovereignty over the Archipelago of San Andrés, Providencia and Santa Catalina.

In 2001, Nicaragua declared that they disputed the agreement and filed a formal complaint before the International Court of Justice in The Hague, claiming territory east of longitude 82, including the archipelago of San Andrés. On December 13, 2007, the International Court of Justice recognized the full sovereignty of Colombia over the islands of San Andrés, Providencia and Santa Catalina, but left open the question about the demarcation of the maritime boundary in the meridian 82 and the sovereignty of one of the two nations over the keys of Serranilla, Quitasueño, Serrana, Roncador and Bajo Nuevos.