However, during the Dutch–Indonesian Round Table Conference of 1949, both Indonesia and the Netherlands could not agree on the status of New Guinea, with the Netherlands arguing that it should keep West New Guinea for the eventual self-determination of the natives, once those inhabitants had become sufficiently "mature". The resulting accord was unclear on the final status of New Guinea, although the Dutch Labor Party defeated an amendment that would have explicitly excluded New Guinea from Indonesian independence. From 1951, the Indonesian government interpreted the results of the Round Table Conference as giving it sovereignty over all of the former Dutch East Indies, including New Guinea. Throughout negotiations with the Indonesians, the Netherlands maintained it could give up sovereignty over Dutch New Guinea, because the conservative parties in the Dutch parliament, deeply humiliated by Indonesian independence and wanting to maintain a colonial stronghold in the area, would not vote to ratify any such agreement. When the Indonesian government withdrew from the Netherlands-Indonesia Union due to frustration at the slow pace of talks over New Guinea, the Netherlands felt relieved from any obligation to continue negotiations on the issue. Indonesia, supported by all of the African and Asian nations except nationalist China, tried to pass a United Nations General Assembly resolution urging the Netherlands to negotiate with it on the status of West New Guinea. However, the resolutions were blocked by the opposition of all of the Western nations except Greece.