It is important to distinguish disarmament from arms control. The former is the process of renouncing or generally eliminating weapons systems; control measures, on the other hand, seek to limit or restrain the production, testing, deployment and use of particular weaponry together with measures which build confidence and security between states. Disarmament is a radical proposition. Not surprisingly, the contemporary world shows little tangible understanding of disarmament as a total process, though with control there is encouraging movement as the result of bilateral action by superpowers, or by regional groups of smaller powers, or by the UN as sponsor and observer.