Western New Guinea became the focus of a political dispute between the Netherlands and Indonesia following the recognition of the independence of the latter. The Indonesian side claimed the territory as its own while the Dutch side maintained that its residents were not Indonesian and that the Netherlands would continue to administer the territory until it was capable of self-determination. In May 1959 a United States diplomat proposed a scheme for using a "a special United Nations trusteeship over the territory for a limited number of years, at the end of which time sovereignty would be turned over to Indonesia"; and in March 1961 the US Embassy in Jakarta asserted "the Indos once contended that UN trusteeship would be anathema under any circumstances. Now, although they have not gone so far as to be willing to call a trusteeship a trusteeship, they talk in terms of "one or two years" of some kind of interregnum as being acceptable." Indonesia began landing paratroops onto the territory of Western New Guinea in December 1961 which prompted a political crisis between the Netherlands and Indonesia. The United States mediated in the dispute and this led to the signing of the New York Agreement in September 1962. The agreement offered to transfer the administration from the Netherlands to a United Nations temporary authority on 1 October 1962, and gave the United Nations a discretion to transfer all or part of the administration to Indonesia. The United Nations General Assembly approved the agreement and accepted administration on 21 September 1962 in General Assembly resolution 1752; and on 1 May the following year accept transferred the administration of the territory to Indonesia. The agreement also included assurances by Indonesia of the practices it would exercise if the United Nations chose to transfer the administration to Indonesia, among the assurances was promise that all men and women of West New Guinea who were not foreign nations would be eligible to vote in an Act of Free Choice at a later stage to determine the permanent status of the territory. The United Nations mission was initially led by José Rolz-Bennett of Guatemala and then by Djalal Abdoh of Iran who served as the Administrator. In addition to civil administration, UNTEA also had a peacekeeping role through military observers. Nineteen postage stamps, as well as some postal stationery items, were issued by UNTEA. These were created by overprinting existing stocks of Netherlands New Guinea issues. At the time packets of all stamps were sold at UN Headquarters by the United Nations Postal Administration and they remain readily available on the retail market. During the seven month transition period Dutch civil servants and officials were slowly recalled to the Netherlands and were replaced by local and Indonesian officials. It was agreed that following the transfer of authority, E. J. Bonay a member of the New Guinea Council would be appointed as the first Indonesian Governor. The transfer of authority took place on 1 May 1963 and West New Guinea became a province of Indonesia known as Irian Barat, later renamed Irian Jaya. This was the first time in its history that the United Nations assumed direct administrative responsibility for a territory. The United Nations would go on to undertake similar missions in Cambodia, Croatia, Kosovo and East Timor.