Which United Nations organ is composed of representatives of all Member States, each with one vote?

The General Assembly is indeed composed of representatives from all United Nations Member States, and each representative has the right to cast one vote. This structure ensures that every Member State has an equal voice in discussions and decision-making processes within the UN. The General Assembly serves as a platform for all countries to address international issues, propose new initiatives, and cooperate on matters concerning peace, security, and development.

This unique characteristic of one vote per state supports the democratic principle of equality among nations, irrespective of their size, population, or economic strength. In contrast, other UN organs have different voting structures or compositions: the Security Council includes only 15 members and has a unique voting system where certain members have veto power; the International Court of Justice consists of judges elected from different countries, but does not operate on a one-vote-per-nation basis; and the Economic and Social Council has a limited membership that represents only a subset of UN Member States. Hence, the General Assembly distinctly embodies the inclusive, egalitarian ethos of the United Nations.