日本和美国举行了关于美国“核保护伞”的例行会谈，会谈还重点讨论了中国“破坏稳定的核武器扩建和测试”。扩展威慑对话（EDD）在盟国与中国之间因北京扩大和现代化核武库努力而日益加剧的紧张局势中举行。
日本和美国于2月22日举行了扩展威慑对话（EDD），重点讨论了美国的“核保护伞”和中国“破坏稳定的核武器扩建和测试。” 日本国防省发表声明称，“两国代表团讨论了中国快速、不透明且破坏稳定的核武器扩建和测试，以及俄罗斯在军控方面的历史性不遵守。”美国重申了多边战略稳定和军控会谈的必要性。日本欢迎美国达成更好协议的意图，并强调了让俄罗斯和中国参与的重要性。 会谈是在盟国与中国紧张关系日益加剧的背景下进行的，这种紧张源于北京扩大和现代化核武库的努力。这一对话凸显了美日防务关系在区域安全挑战中的持续协调。 （约150字）
U.S. officials' calls for reforming the international order at the Munich Security Conference signal growing importance for Japan-U.S. ties. The Trump administration's 2026 National Defense Strategy offers Japan a chance to deepen its role.
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The expiry of the New Strategic Arms Reduction Treaty (New Start) between the US and Russia could trigger a three-way arms race involving Beijing, Washington, and Moscow, analysts warn. China has reiterated its refusal to join trilateral nuclear disarmament talks with the US and Russia, citing disparities in nuclear stockpile sizes. Beijing hopes the US responds positively to Russia's suggestions to safeguard global strategic stability.
Troops from China's Eastern Theatre Command, facing the Taiwan Strait and Japan, conducted a decontamination drill simulating a nuclear attack response. The exercise focused on enhancing operational readiness in complex battlefield environments. It was reported amid heightened global concerns over nuclear facility strikes.
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US State Department officials have provided more details on their claim that China conducted a secret nuclear weapons test in 2020. The alleged test was described as 'a singular explosion' and was not disclosed by China. The US has confirmed it will return to nuclear testing.