Final answer:
To be eligible for UN membership, a state must be peace-loving, accept the obligations of the UN Charter, and be judged capable of fulfilling those obligations. Admission requires a recommendation from the Security Council and a decision by the General Assembly.
Step-by-step explanation:
Eligibility to become a Member of the UN is primarily based on being a peace-loving state that accepts the obligations contained in the United Nations Charter and, in the judgment of the organization, is able to carry out these obligations.
Membership in the United Nations is open to all other peace-loving states that accept the obligations contained in the present Charter and, in the judgment of the Organization, are able and willing to carry out these obligations.
The admission of any such state to membership in the United Nations will be affected by a decision of the General Assembly upon the recommendation of the Security Council.
The General Assembly is the main deliberative assembly of the UN where each of the 193 member states has equal representation.
The Security Council, on the other hand, is responsible for maintaining international peace and security and has 15 members, including the Permanent Five (P5) - the United States, United Kingdom, France, Russia, and the People's Republic of China - who each have the power to veto council decisions.