But actions speak louder than words, and challenges to the NPT regime have continued to undermine its basic principles, causing considerable backsliding. Today, the challenges posed by proliferation are more complex than ever:
但事实胜于雄辩，那些NPT体制面临的挑战正继续破坏条约的基本原则，并造成了令人担忧的倒退。今天，核扩散对世界和平的挑战比以往任何时期都要复杂：