WASHINGTON — As the United States evaluates its military presence in Europe, the Pentagon’s top policy official has reported growing support among NATO allies for a strategic shift aimed at fostering European self-reliance in defence. Elbridge Colby, Undersecretary of Defense for Policy, briefed the Senate Armed Services Committee on the ongoing review of American troop levels on the continent, emphasizing a collaborative approach with allied nations.

Colby outlined that the Department of Defence is currently engaged in guiding European partners to enhance their own military capabilities, a concept informally dubbed “NATO 3.0.” This initiative envisions Europe maintaining a non-nuclear defence posture independently, reducing reliance on American forces while reinforcing the collective security framework of the alliance.

The review, which is slated to conclude in the coming months, comes amid concerns from European capitals about potential cuts to the current US troop presence of approximately 80,000 personnel. Lawmakers have previously restricted reductions below 76,000 troops without extensive consultations and mitigation plans to address any perceived security gaps. European leaders worry that a premature US drawdown could create vulnerabilities as Russia continues to pose a significant threat in the region.

Colby’s testimony followed the submission of a detailed 16-page document to Congress outlining the administration’s 2026 National Defense Strategy. His presentation drew a mix of bipartisan scrutiny from lawmakers who criticized the Pentagon for insufficient transparency surrounding the troop evaluations and the broader defence realignment plans.

Relations between the US and some NATO members have been strained in recent years. Former President Donald Trump publicly critiqued European allies for their reluctance to support US-led operations, notably citing their refusal to join conflicts such as the war in Iran. In retaliation, several NATO countries imposed restrictions on US military access to their airspace and bases, further complicating alliance dynamics. Trump had also indicated intentions to penalize allies perceived as disloyal, increasing tensions within the transatlantic partnership.

Despite these challenges, Colby conveyed optimism regarding efforts to encourage greater burden-sharing. He noted that allied nations are reportedly increasing defence expenditures, purchasing more US-made weaponry, and strengthening their domestic defence industries. According to his statement, allies have generally responded positively to the Pentagon’s outreach, engaging in constructive dialogue and offering substantial feedback through a questionnaire designed to evaluate both strategic contributions and alignment with US policy objectives.

The Pentagon’s reassessment represents a pivotal moment in NATO’s evolution, balancing the dual goals of maintaining robust collective security while encouraging greater European self-sufficiency amid an increasingly complex global security environment.