美军试射洲际导弹，俄方：美方提前告知

Core Viewpoint - The article discusses the recent test launch of the U.S. Air Force's Minuteman III intercontinental ballistic missile, highlighting its significance in assessing the missile system's reliability and operational readiness, amidst ongoing geopolitical tensions and nuclear policy discussions [3][4]. Group 1: Missile Test Launch - The U.S. Air Force conducted a test launch of a Minuteman III intercontinental ballistic missile from Vandenberg Space Force Base, California, without a warhead [3]. - The missile flew approximately 4,200 miles (about 6,759 kilometers) to a U.S. military test site in the Marshall Islands [3][4]. - The test aimed to evaluate the reliability and operational readiness of the Minuteman III missile system, which has been in service since the 1970s, with around 400 units currently in active duty [4]. Group 2: Future of Minuteman III - The U.S. Air Force plans to replace the Minuteman III with a new missile system called Sentinel, but progress on this project has been slow [4]. - Due to delays, officials indicate that the Minuteman III may remain in service until 2050, significantly beyond its originally planned retirement in the 2030s [4]. Group 3: Geopolitical Context - Prior to the missile launch, the U.S. informed Russia about the test, and Russia's presidential spokesperson stated that they would continue to adhere to the Comprehensive Nuclear-Test-Ban Treaty [4]. - Discussions regarding the potential resumption of nuclear tests by the U.S. were highlighted, with President Trump indicating a directive to the Pentagon in response to other countries' testing plans [5]. - Russian President Putin emphasized that any nuclear tests conducted by the U.S. or other treaty signatories would prompt reciprocal measures from Russia [5].