最新！特朗普称美国将进行核试验 拒绝透露相关细节！普京、佩斯科夫曾表态：美若行动，俄必反制

Group 1 - The core viewpoint of the articles is that the U.S. is considering resuming nuclear weapons testing, similar to other countries, with President Trump indicating a potential shift in policy regarding nuclear tests [1][3] - President Trump has instructed the Pentagon to prepare for nuclear tests in response to other nations' activities, although Energy Secretary Brouillette clarified that this would not include nuclear explosions [1][3] - Russian officials, including President Putin, have stated that if the U.S. conducts nuclear tests, Russia will take corresponding countermeasures, indicating a potential escalation in nuclear tensions [3] Group 2 - The last U.S. underground nuclear test occurred in 1992, and the Comprehensive Nuclear-Test-Ban Treaty (CTBT) was adopted in 1996, committing signatories to refrain from nuclear testing [3] - Russia is actively assessing the implications of U.S. Secretary Rubio's statements regarding Trump's intentions to validate nuclear weapon safety through testing, suggesting that any U.S. tests would end the moratorium on nuclear testing [1][3] - The Russian government is preparing to gather information and analyze the situation in response to the potential U.S. nuclear tests, indicating a proactive stance on national security [3]