U.S. Defense Secretary Lloyd Austin urged NATO members to increase their defense burden for Europe during a meeting in Brussels on Thursday [1].
This shift signals a growing demand for European nations to take primary responsibility for their own security as the U.S. reassesses its strategic footprint. The move follows tensions over base access during a previous attack by Iran [1].
Speaking at the NATO headquarters, Austin said that the alliance must return to being a hard military alliance with true military capabilities. He said the organization must be able to exercise deterrence on the continent and play a leading role in European defense [1].
Austin said that some countries still need to put in more effort regarding their financial commitments [1]. This follows an agreement reached at the 2025 summit where NATO members pledged to raise defense spending to five percent of GDP by 2035 [1].
As part of this strategic pivot, the U.S. will review its troop deployments in Europe over the next six months [1]. The Department of Defense announced it will reduce the number of U.S. army brigades stationed in Europe from four to three [2]. This reduction returns the deployment levels to those seen in 2021 [2].
The reduction of one brigade reflects a broader effort to balance U.S. global commitments while pushing allies to fill the resulting security gaps [1, 2].
“NATO must return to being a hard military alliance with true military capabilities.”
The reduction of U.S. forces and the push for a 5% GDP spending target indicate a transition toward 'burden-sharing.' By linking troop withdrawals to the failure of some allies to provide base access during the Iran attack, the U.S. is using tactical reductions to incentivize European strategic autonomy and financial investment.
