evidence: note: Bolivia has free port privileges in maritime ports in Argentina, Brazil, Chile, and Paraguay [...] Bolivia-Brazil: The Roboré Accord of March 29, 1958 placed the long-disputed Isla Suárez/Ilha de Guajará-Mirim, a fluvial island on the Río Mamoré, between the two towns of Guajará-Mirim (Brazil) and Guayaramerin (Bolivia), under Bolivian administration but did not resolve the sovereignty dispute [...] Bolivia-Paraguay: On April 27, 2009, the president of Argentina hosted the presidents of Bolivia and Paraguay together with representatives of the fiver other guarantor states -- Brazil, Chile, Peru, the United States, and Uruguay -- to the signing for the Final Record of the Boundary Commission in execution of the 1938 Peace Treaty between Bolivia and Paraguay.