This intensified dramatically in the 1960s when Venezuela formally contested the validity of the 1899 ... Guyana’s case had to be marshalled through several mechanisms, the Geneva agreement ...

Simmering tensions over ... Guyana, a small English-speaking former British and Dutch colony, insists Essequibo’s frontiers were determined by an arbitration panel in 1899. But, Venezuela ...

Rubio signed an agreement ... a bill to declare Guyana's Essequibo as Venezuela's 24th state, a move rejected internationally. Guyana insists the border was finalized by an 1899 arbitration ...