Elbridge Colby tells meeting in Brussels that US plans to reduce conventional forces in Europe but remains committed to Nato alliance

The Pentagon’s policy chief, Elbridge Colby, has told European Nato defence ministers in Brussels that they need to step up their combat capabilities and take the lead in protecting their continent from the Russian threat.

The influential undersecretary for war, sent by the White House in place of his boss, Pete Hegseth, said the US would reduce conventional forces in Europe but insisted Washington remained committed to the military alliance.

Colby said Europe had to go “beyond inputs and intentions toward outputs and capabilities” as he sought to reset relations after last month’s damaging row over Greenland, which Donald Trump had demanded from Denmark.

“It means prioritising war-fighting effectiveness over bureaucratic and regulatory stasis. It means making hard choices about force structure, readiness, stockpiles and industrial capacity that reflect the realities of modern conflict rather than peacetime politics,” Colby told Nato allies on Thursday.