特朗普：美国将开始核武器试验！但目前尚不清楚指令所指为何种类型测试，包括核弹头本身，或是导弹等运载系统

Core Points - The U.S. President Trump has instructed the defense department to initiate nuclear weapons testing procedures on a basis comparable to other major powers, although the specifics of the tests remain unclear [2][4] - Trump stated that the U.S. will begin the relevant processes immediately due to other countries conducting related tests, although he did not name any specific countries [3] - Despite the potential for increased global nuclear risks, Trump does not believe the risks have risen and reiterated a desire for nuclear disarmament [4] Summary by Sections - Nuclear Testing Initiation - The U.S. is set to start nuclear weapons testing procedures, aligning with actions taken by other major nations [2] - The exact nature of the tests, whether involving nuclear warheads or delivery systems, is not specified [2] - Response to Global Testing - Trump emphasized that the decision to initiate testing is a response to other nations' nuclear-related activities [3] - He indicated that further details would be released at an appropriate time [3] - Current U.S. Nuclear Strategy - The U.S. has not conducted nuclear explosion tests since 1992 and has adhered to a long-standing moratorium on underground nuclear tests [4] - The recent announcement by Russia regarding new nuclear-powered cruise missile tests has contributed to U.S. pressure to reconsider its stance [4] - The U.S. relies on high-performance simulation systems and small-scale experiments to maintain nuclear deterrence effectiveness, with officials believing that there is no need to resume nuclear explosion tests [4] - Treaty and Preparation - The U.S. signed the Comprehensive Nuclear-Test-Ban Treaty in 1996 but has not completed the ratification process [4] - Even with a formal directive, it would take several months for the U.S. to prepare for any nuclear tests [4]