Explanation: Conference on Disarmament (CD): It is the international forum for work on disarmament, and for matters related to weapons in space and other space security issues.

• One of its core focus areas is the prevention of an arms race in outer space (PAROS).
• Guidelines on space sustainability: In 2019, U.N. Committee on the Peaceful Uses of Outer Space (COPUOS) has adopted a set of 21 voluntary, non-binding guidelines to ensure the long-term sustainability of outer space activities.

Source: FORUMIAS