There the matter rested until 1962, when Venezuela renewed its 19th-century claim, alleging that the arbitral award was invalid. After his death, Severo Mallet-Prevost, legal counsel for Venezuela and a named partner in the New York law firm Curtis, Mallet-Prevost, Colt & Mosle published a letter alleging that the judges on the tribunal acted improperly as a result of a back-room deal between Russia and Great Britain. The British Government rejected this claim, asserting the validity of the 1899 award. The British Guiana Government, then under the leadership of the PPP, also strongly rejected this claim. Efforts by all parties to resolve the matter on the eve of Guyana's independence in 1966 failed; as of today, the dispute remains unresolved.