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 30 Section 19

It is agreed that no form of racial or religious discrimination shall be permitted within the headquarters district.

Section 20

The Secretary-General and the appropriate American authorities shall settle by agreement the channels through which they will communicate regarding the application of the provisions of this agreement and other questions affecting the headquarters district, and may enter into such supplemental agreements as may be necessary to fulfill the purposes of this agreement. In making supplemental agreements with the Secretary-General, the United States shall consult with the appropriate state and local authorities. If the Secretary-General so requests, the Secretary of State of the United States shall appoint a special representative for the purpose of liaison with the Secretary-General.

Section 21

(a) Any dispute between the United Nations and the United States concerning the interpretation or application of this agreement or of any supplemental agreement, which is not settled by negotiation or other agreed mode of settlement, shall be referred for final decision to a tribunal of three arbitrators, one to be named by the Secretary-General, one to be named by the Secretary of State of the United States, and the third to be chosen by the two, or, if they should fail to agree upon a third, then by the President of the International Court of Justice.

(b) The Secretary-General or the United States may ask the General Assembly to request of the International Court of Justice an advisory opinion on any legal question arising in the course of such proceedings. Pending the receipt of the opinion of the Court, an interim decision of the arbitral tribunal shall be observed by both parties. Thereafter, the arbitral tribunal shall render a final decision, having regard to the opinion of the Court.

Section 22

(a) The United Nations shall not dispose of all or any part of the land owned by it in the headquarters district without the consent of the United States. No. 147