US Air Force General Alexus Grynkewich formally took over the reins on Friday as NATO’s Supreme Allied Commander Europe (SACEUR), reaffirming American pledge to European security in the face of increasing uncertainty surrounding potential US troop withdrawals. The change of command at NATO’s military headquarters in Mons, Belgium, is at a moment of heightened importance as some allies are raising alarm over the Trump administration’s consideration of shifting global military deployments.
Historically commanded by the US since its post-World War II establishment, the post of SACEUR had come under speculation of being reallocated as part of President Trump’s demand for Europe to take more defense responsibility. Although Washington eventually reaffirmed its commitment by nominating Grynkewich, concern remains regarding the future of America’s 80,000-strong military presence in Europe.
“These are consequential times,” Grynkewich said during the ceremony, placing an emphasis on unity and common determination between NATO allies. “The threats against us are only more and more interconnected, but they are no match for the alliance assembled here today,” he added.
Grynkewich, a retired fighter pilot with the call sign “Grynch,” also becomes commander of US European Command in Germany. During his recent Senate hearing, he was upbeat about Ukraine’s prospects for defeating Russia and supported continued aid to Kyiv. But he declined to weigh in on recent US moves to postpone shipments of critical weapons to Ukraine, saying the situation was ongoing.
European leaders, in their promise to boost defense expenditures, have called for gradual shifts in US force posture to prevent exposing weaknesses. The appointment is seen as evidence of continuity and reassurance amid a time of changing threats and complicated military concerns, especially following Russia’s continued aggression.
His predecessor, Army General Christopher Cavoli, was praised for his advisory efforts in aiding Ukraine’s defense and reforming NATO’s strategic thinking.