What did Walter cronkite mean when he said with each escalation the world comes closer to the brink of cosmic disaster?

Walter Cronkite's statement underscores the escalating tensions and conflicts during the Cold War, particularly the arms race and the proliferation of nuclear weapons. He warned that each increase in military aggression or hostility among nations brought humanity dangerously close to a catastrophic event, potentially leading to nuclear war. This sentiment reflects a deep concern for global security and the fragile state of peace in a world armed with destructive capabilities.