The General Agreement On Tariffs And Trade

Article XXXIII Accession

A government not party to this Agreement, or a government acting on behalf of a separate customs territory possessing full autonomy in the conduct of its external commercial relations and of the other matters provided for in this Agreement, may accede to this Agreement, on its own behalf or on behalf of that territory, on terms to be agreed between such government and the CONTRACTING PARTIES. Decisions of the CONTRACTING PARTIES under this paragraph shall be taken by a two-thirds majority.

Next: Article XXXIV Annexes