U.S. President Donald Trump demanded that NATO allies increase their defense spending ahead of a summit in Ankara, Turkey.

The demand arrives as the alliance seeks to address burden-sharing gaps caused by Russia’s war in Ukraine. The pressure on European nations to contribute more to collective defense tests whether the region can rearm quickly enough to meet U.S. expectations.

President Trump said NATO allies should raise their defense spending to 5% of GDP [1]. This figure represents a significant increase over previous guidelines and would require some members to more than double their current defense spending [2].

The summit is being hosted by President Recep Tayyip Erdoğan in Ankara [3]. The gathering serves as a critical juncture for the alliance to negotiate the financial commitments of its member states. Trump's push for higher spending targets aims to shift more of the financial responsibility for Atlantic security away from the U.S. and toward its partners [4].

Allied leaders are gathering this week to discuss these requirements and the broader security architecture of the region [3]. The shift in spending goals follows a pattern of the U.S. administration moving the target for what constitutes an acceptable contribution to the alliance [5].

While the 5% target is a sharp increase, the administration said that the current security environment necessitates a more aggressive investment in military capabilities [4]. The outcome of the Ankara summit will likely determine the level of U.S. support for collective defense moving forward.

Trump said NATO allies should raise defense spending to 5% of GDP

The demand for a 5% GDP spending floor represents a pivot from the long-standing 2% target, signaling a more transactional approach to the NATO alliance. By pushing for a doubling of current expenditures, the U.S. is leveraging the security crisis in Ukraine to force a structural shift in how European allies fund their own sovereignty and collective security.