Core Viewpoint - The U.S. Department of Defense has released a new National Defense Strategy, prioritizing homeland security and emphasizing the previously overlooked Western Hemisphere [1][2]. Group 1 - The document denies any inclination towards isolationism while urging U.S. allies to take on more responsibilities and increase investments in the defense industrial base [2]. - The National Defense Strategy outlines how the Department of Defense will follow the guidance of the new National Security Strategy report, which is considered a foundational document for the U.S. Department of Defense [2]. - The strategy emphasizes that the primary task of the U.S. military is to defend the homeland, focusing on securing borders, combating drug terrorism, and protecting airspace [2]. Group 2 - The release of the National Security Strategy report in December 2025 details President Trump's "America First" foreign policy, which centers on U.S. core national interests and readjusts global security priorities [2].