Despite an 1899 ruling by a court of arbitration which awarded much of the disputed territory to British Guiana, Venezuela in the 1960s reasserted its claim to Guyana's present territory west of the Essequibo river.
So we all know Prime Minister Burnham in 1970, signed a protocol declaring a 12-year moratorium on the border issue, which has nevertheless remained a source of friction between the two countries. So in 1982 we has NOT A BLADE OF GRASS.