俄美唯一核军控条约失效，俄方释放对话信号，美方“稍后作出决定”

Core Viewpoint - The expiration of the New Strategic Arms Reduction Treaty (New START) between Russia and the United States marks the first time in over half a century that there are no binding limits on their strategic nuclear arsenals, raising concerns about global security and stability [1][4][10] Group 1: Treaty Expiration and Implications - The New START treaty, which limited both countries to 1,550 deployed strategic nuclear warheads and 700 delivery vehicles, has officially expired, leading to fears of increased nuclear competition and instability [4][7] - Russian officials expressed regret over the treaty's expiration, indicating that they no longer feel bound by its terms and may pursue their own strategic military policies [3][5] - The lack of a binding treaty could lead to misunderstandings and miscalculations, increasing the risk of nuclear conflict [9][10] Group 2: International Reactions and Concerns - UN Secretary-General António Guterres highlighted the severe implications for international peace and security, urging both nations to return to negotiations [4] - Analysts warn that the treaty's expiration could weaken decades of norms and transparency in nuclear competition, potentially prompting non-nuclear states to reconsider their commitments to non-proliferation [7][9] - The expiration is seen as a reflection of deteriorating strategic stability and security, rather than an isolated event [10] Group 3: Future of Arms Control - Observers note that the expiration of the treaty does not immediately signal a new arms race, as both nations may prefer to avoid escalating tensions too quickly [8][9] - The potential for future agreements remains uncertain due to existing disputes and the complexity of negotiations [8][9] - The absence of structured diplomatic dialogue may lead to a more fragile international security environment, increasing the likelihood of misinterpretations and misjudgments [9]