First, why are States being urged to take strong and effective action, including through legally binding instruments, to stop the proliferation of nuclear weapons, which is a threat to international peace and security?
首先，为什么敦促各国采取有力和有效的行动，包括通过具有法律约束力的文书，以制止威胁国际和平与安全的核武器扩散呢？