▁controlled ▁by ▁Guy ana ▁and ▁claimed ▁by ▁Sur in ame . ▁ ▁In ▁ 1 9 7 1 ▁both ▁govern ments ▁in ▁Tr in idad ▁agreed ▁that ▁they ▁continue ▁tal ks ▁over ▁the ▁border ▁issue ▁and ▁withdraw ▁their ▁military ▁forces ▁from ▁the ▁disput ed ▁Tri angle . ▁ ▁Guy ana ▁has ▁never ▁held ▁upon ▁this ▁agreement . ▁▁ ▁In ▁Sur in ame ▁it ▁is ▁seen ▁as ▁a ▁part ▁of ▁the ▁Co ero eni ▁Res ort ▁located ▁in ▁the ▁S ip ali w ini ▁District , ▁while ▁for ▁Guy ana ▁it ▁belongs ▁to ▁the ▁region ▁of ▁East ▁Ber b ice - Cor enty ne . ▁▁ ▁( Sur in ame ▁also ▁disput es ▁the ▁southern ▁part ▁of ▁the ▁border ▁with ▁French ▁Gu iana .) ▁ ▁History ▁of ▁the ▁Tig ri ▁Area ▁territorial ▁dispute ▁Robert ▁Sch om burg k ▁survey ed ▁British ▁Gu iana ' s ▁borders ▁in ▁ 1 8 4 0 . ▁T aking ▁the ▁Cour ant y ne ▁River ▁as ▁the ▁border , ▁he ▁sa iled ▁up ▁to ▁which ▁he ▁de emed ▁its ▁source , ▁the ▁K ut ari ▁River , ▁in ▁order ▁to ▁del ine ate ▁the ▁boundary . ▁In ▁ 1 8 7 1 , ▁however , ▁Charles ▁Bar r ington ▁Brown ▁discovered ▁the ▁New ▁River ▁or ▁Upper ▁Cor enty ne , ▁which ▁is ▁the ▁source ▁of ▁the ▁Cor enty ne ▁River . ▁Thus ▁the ▁Tig ri ▁Area ▁or ▁New ▁River ▁Tri angle ▁dispute ▁was ▁born . ▁ ▁The ▁trib unal ▁which ▁de alt ▁with ▁the ▁Venezuela ▁Cris is ▁of