Link to my article: https://www.reuters.com/legal/government/us-congress-passes-massive-defense-bill-that-includes-support-ukraine-europe-2025-12-17/
On December 17, 2025, the U.S. Senate overwhelmingly passed the fiscal 2026 National Defense Authorization Act (NDAA), a record $901 billion defense policy bill that now moves to President Donald Trump’s office for signature. The legislation sets Pentagon policy and authorizes a 4% pay raise for U.S. troops, reforms how military equipment is acquired, and includes broad strategic measures to strengthen the U.S. military. Key aspects include $800 million in security assistance for Ukraine over the next two years and $175 million for the Baltic Security Initiative, which supports Latvia, Lithuania, and Estonia. The bill also limits the Pentagon’s ability to reduce U.S. forces in Europe below 76,000 and bars the loss of NATO Supreme Commander status for the U.S. European Commander. This bipartisan measure defies elements of President Trump’s recent National Security Strategy, which had recalibrated the U.S. relationship with Europe.
The passing of this massive defense bill is a crucial signal of the U.S. commitment to collective security in Europe and continued support for Ukraine amid ongoing Russian aggression. Putting significant funding for Ukrainian defense and Baltic security, even as the president’s own strategy was seen as more Russia-friendly, shows Congress asserting its authority over national security priorities. This shows a rare alignment of interests around deterring Russian influence and ensuring NATO’s credibility. In the long term, the bill could strengthen deterrence in Eastern Europe and reassure allies. Still, it may also heighten tensions with Moscow, which perceives expanded Western support as a threat to its regional designs.
In the U.S. Congress, lawmakers could emphasize the two-party nature of the bill, using it to reinforce Congressional authority in defense policy, especially regarding support for allies and oversight of the executive branch’s strategic direction. As for the executive branch, the Trump administration might leverage the bill to position the U.S. as a reliable security partner in Europe while balancing domestic political priorities. The NATO allies, specifically Ukraine and NATO members like the Baltic states, see the funding as a reassurance of continued Western backing and integrate it into their defense planning, thereby reinforcing deterrence. However, Putin’s government may view this as further Western encroachment on its sphere of influence, prompting diplomatic pushback or more aggressive measures.
By authorizing nearly $1 trillion in defense policy, Congress exercises its constitutional authority over military priorities, reflecting the domestic balance of power between legislative and executive branches. The bill’s strong support for Ukraine and NATO illustrates the use of hard power, using military and financial resources to shape geopolitical outcomes and deter the opposition. Supporting allied states reinforces their sovereignty and collective defense mechanisms under NATO. Furthermore, the two-party nature of the vote demonstrates how democratic legitimacy influences national security policy, signaling both domestic consensus and international resolve.