Venezuela has been pressing a historic claim to Guyana's Essequibo region, which encompasses two thirds of the former British colony, since US oil giant Exxon Mobil discovered oil in off its coast in 2015.
Guterres sent the case to the ICJ yesterday following a failed UN-sponsored attempt that was aimed at brokering a settlement between Venezuela and Guyana by the end of 2017.
"Guterres went too far" by attempting to bypass the Geneva Agreement, a 1966 border dispute deal that Venezuela reached with then-colonial power Britain, Foreign Minister Jorge Arreaza said.
Guyana maintains that valid land borders were set in 1899 by an arbitration court decision, a decision Venezuela has never recognized.
The announcement in May 2015 of a significant discovery of high-quality oil in an offshore concession 190 kilometers off Guyana set off a round of recriminations between Venezuela and its eastern neighbor.
Guyana is pressing ahead with plans to drill for oil in the disputed waters, with production expected to begin in mid-2020.
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