evidence: The Guayana Esequiba is a territory subject to one of the most longstanding and territorial disputes in South America. The territory to the west of the Essequibo river has been historically claimed by Venezuela. Guayana Esequiba is an area of 159,500 km² today controlled by Guyana and divided into six administrative regions: Essequibo Islands-West Demerara, Upper Takutu-Upper Essequibo, Potaro-Siparuni, Barima-Waini, Pomeroon-Supenaam, and Cuyuni-Mazaruni. [...] In 1966 Venezuela, British Guiana and the United Kingom agreed to resolve the territorial disputes in the Geneva Treaty. Later the same year Venezuela recognized Guyana as independent state but which territories started to the east of the Essequibo river. In 1969 a pro-independence rebellion broke out in the Guayana Esequiba, the Ruununi Uprising, which was neutralized by the Guyanese Armed Forces. The agreement subscribed by the Geneva Treaty was not reached, and despite the Port of Spain Protocol signed in 1970 no solution has been found yet to the Guyana-Venezuela border dispute. The disagreements have extended to the maritime areas in dispute as well. The Venezuelan Navy in 2013 deteined and oil exploration ship commissioned by the Government of Guyana in the disputed territorial waters. The oil in the cost near the disputed territories may make the resolution of the conflict more difficult than ever.