Former President Trump is reportedly contemplating a significant shift in military leadership that could involve the US relinquishing its long-held command position in NATO. This potential move has triggered alarm among Republican lawmakers, who are expressing deep concern over the ramifications for US defense and deterrence capabilities. Key GOP leaders, including Armed Services Committee chairs, warn that such changes could undermine American commitments to NATO and lead to a destabilization of European security, particularly in light of increasing tensions with Russia. The proposed Pentagon command shake-up is seen as a historic shift, as the US has held a dominant role in NATO operations for over 75 years. Lawmakers urge Trump to reconsider any plans that may abandon essential military posts or cut defense expenditures, emphasizing the need for continued US leadership in the alliance.