has claimed these territories since 1886, as part of the geographic archipelago of San Andrés and Providencia. This date is disputed by other claimant states, most prominent among them Nicaragua, which has argued that Colombia had not claimed the territory by name until recently. Jamaica's claim has been largely dormant since entering into a number of bilateral agreements with Colombia. Between 1982 and 1986, the two states maintained a formal agreement which granted regulated fishing rights to Jamaican vessels within the territorial waters of Bajo Nuevo and nearby Serranilla Bank. Jamaica's signing of this treaty was regarded by critics as a de facto recognition of Colombian sovereignty over the two banks. However, the treaty is now extinguished, as Colombia declined to renew it upon its expiration in August 1986. In November 1993, Colombia and Jamaica agreed upon a maritime delimitation treaty establishing the Joint Regime Area to cooperatively manage and exploit living and non-living resources in designated waters between the two aforementioned banks. However, the territorial waters immediately surrounding the cays themselves were excluded from the zone of joint-control, as Colombia considers these areas to be part of its coastal waters. The exclusion circles were defined in the chart attached to the treaty as "Colombia's territorial sea in Serranilla and Bajo Nuevo". The agreement came into force in March 1994. Nicaragua lays claim to all the islands on its continental shelf, covering an area of over 50,000 km2 in the Caribbean Sea, including Bajo Nuevo Bank and all islands associated with the San Andrés and Providencia archipelagoes. It has persistently pursued this claim against Colombia in the International Court of Justice (ICJ), filing cases in both 2001 and 2007. The main cause of the dispute lies in the debated validity and applicability of the Esguerr–Bárcenas treaty, exchanged with Colombia in March 1928. The United States claim was made on 22 November 1869 by James W. Jennett under the provisions of the Guano Islands Act. Most claims made by the U.S. over the guano islands in this region were officially renounced in a treaty with Colombia, dated September 1972. However, Bajo Nuevo Bank was not mentioned in the treaty, and Article 7 of the treaty states that matters not specifically mentioned in the treaty are not subject to its terms. The United States considers the bank as an unincorporated unorganized territory. Honduras, prior to its ratification of a maritime boundary treaty