President Kennedy later met with both the Dutch Foreign Minister Joseph Luns and Sukarno, with both agreeing to a United Nations Trusteeship but disagreeing on the details. When the United States sponsored a "compromise" resolution in the United Nations which Indonesia opposed, relations with Indonesia soured. In December, National Security Advisor McGeorge Bundy decisively advised Kennedy towards a more pro-Indonesian position, lest the "Soviet bloc... draw Indonesia even closer to it". American-mediated secret Ambassadorial level talks began in March 1962, without preconditions, but Sukarno was sceptical of American intentions. The talks were held at the Huntland estate at Middleburg, Virginia. An outline of the plan by American diplomat Ellsworth Bunker in 1962 proposed that the Netherlands transfer control over New Guinea to neutral United Nations administrators, who would be gradually replaced by Indonesian administrators, and then entirely to Indonesia, which would then be required to organize a referendum "to give the Papuans freedom" with the United Nations Secretary-General and other United Nations personnel. The Netherlands responded that the proposal was a "shocking betrayal by the United States", initially wanting the referendum to take place under UN administration, although after the United States threatened to make the negotiations public, it acceded with the addition of a "right to self-determination" into the agreement. Foreign Minister Subandrio, who regarded UN supervision and organization of the referendum as a "humiliation for Indonesia", only agreed to a set of pared-down guidelines for the plebiscite when the United States threatened to "switch sides and support the Dutch". The final version of the agreement provided the following parameters for the "act of free choice":