61 STAT.] 80TH CONG. , 1sT SESS.-CH. 482-AUG. 4 , 1947 the United Nations at a price to be determined as provided in paragraph (d) of this section. (b) If the seat of the United Nations is removed from the head- quarters district, all right, title and interest of the United Nations in and to real property in the headquarters district or any part of it shall, on request of either the United Nations or the United States be assigned and conveyed to the United States. In the absence of such request, the same shall be assigned and conveyed to the sub- division of a state in which it is located or, if such subdivision shall not desire it, then to the state in which it is located. If none of the foregoing desires the same, it may be disposed of as provided in paragraph (a) of this section. (c) If the United Nations disposes of all or any part of the head- quarters district, the provisions of other sections of this agreement which apply to the headquarters district shall immediately cease to apply to the land and buildings so disposed of. (d) The price to be paid for any conveyance under this section shall, in default of agreement, be the then fair value of the land, buildings and installations, to be determined under the procedure provided in Section 21. SECTION 23 The seat of the United Nations shall not be removed from the head- quarters district unless the United Nations should so decide. SECTION 24 This agreement shall cease to be in force if the seat of the United Nations is removed from the territory of the United States, except for such provisions as may be applicable in connection with the orderly termination of the operations of the United Nations at its seat in the United States and the disposition of its property therein. SECTION 2 5 Wherever this agreement imposes obligations on the appropriate American authorities, the Governnlent of the United States shall have the ultimate responsibility for the fulfillment of such obligations by the appropriate American authorities. SECTION 26 The provisions of this agreement shall be complementary to the provisions of the General Convention. In so far as any provision of this agreement and any provisions of the General Convention relate to the same subject matter, the two provisions shall, wherever possible, be treated as complementary, so that both provisions shall be appli- cable and neither shall narrow the effect of the other; but in any case of absolute conflict, the provisions of this agreement shall prevail. SECTION 27 This agreement shall be construed in the light of its primary pur- pose to enable the United Nations at its headquarters in the United States, fully and efficiently to discharge its responsibilities and fulfill its purposes. SECTION 28 This agreement shall be brought into effect by an exchange of notes between the Secretary-General, duly authorized pursuant to a resolu- tion of the General Assembly of the United Nations, and the appro- priate executive officer of the United States, duly authorized pursuant to appropriate action of the Congress. 765 Disposal of head- quarters district by U.N. Price for convey- ance. Removal of seat of U.N. Termination of agreement. Fulfillment of U. S . obligations. ('omplomentary provisions. Bringing of agree- ment into effect.