Arrange the following major ideas from the passage in the most logical order for writing a coherent précis:
• [(K)] Disarmament assumes overriding importance despite continued arms competition.
• [(L)] The nuclear age presents humanity with only two alternatives: annihilation or peaceful co-existence.
• [(M)] Achieving peace requires cultivating tolerance and reshaping policies.
• [(N)] Immediate and serious action is necessary as delay is dangerous.
• [(O)] The United Nations bears the primary responsibility for ensuring progress toward disarmament.