Article 4 United Nations Charter

Article 4 of the United Nations Charter is under Chapter II: Membership

Article 4

1. Membership in the United Nations is open to all other peace-loving states which accept the obligations contained in the present Charter and, in the judgment of the Organization, are able and willing to carry out these obligations.
2. The admission of any such state to membership in the United Nations will be effected by a decision of the General Assembly upon the recommendation of the Security Council.

See also: Article 3 United Nations Charter