WASHINGTON — U.S. defense officials have told NATO allies to prepare for a protracted war in Ukraine, signaling Washington's assessment that the conflict will stretch for years, according to senior Pentagon leadership and allied defense representatives involved in recent high-level security consultations in Brussels.

The guidance marks a shift from short-term aid packages. Pentagon planners say the United States anticipates the conflict continuing for several more years, requiring allies to commit to sustained military aid, training programs and economic assistance for Kyiv. The outlook also demands allies absorb rising strains on defense budgets and industrial capacity — meaning increased weapons production and procurement across NATO.

Senator Jack Reed, the chair of the Senate Armed Services Committee, has consistently advocated for a long-term strategy in Eastern Europe, emphasizing sustained support over reactive measures. The Pentagon's assessment will shape upcoming budget battles in Congress, where lawmakers face pressure to approve multi-year funding packages that could force trade-offs with domestic priorities or require increases to overall defense spending.

The Biden administration has provided more than $75 billion in security, financial and humanitarian assistance to Ukraine since the invasion began in February 2022, making it the largest single donor. Germany recently committed an additional one billion euros in military support. France is increasing its defense spending. These pledges reflect allied unity but also signal the escalating political and financial costs of sustaining the effort.

The directive sets the stage for intensive discussions at the NATO defense ministers' meeting scheduled for October in Brussels. Member states will negotiate burden-sharing arrangements and long-term defense industrial strategies to meet sustained demand.