I write to urge you — urgently and without equivocation — to uphold the promises to our allies and stand up in the face of unprovoked Russian aggression.
Russia is the aggressor. It launched a full-scale invasion of Ukraine and continues to wage a war that violates Ukraine’s sovereignty and international law. The US, together with its allies, has a moral and strategic obligation to support Ukraine’s right to remain a free and independent country and to ensure that Moscow does not normalize territorial conquest. The UN General Assembly and multiple international bodies have condemned Russia’s actions and affirmed Ukraine’s territorial integrity.
Recently, Russian-launched drones violated Polish airspace and forced NATO members to scramble jets and strengthen defenses along the eastern flank — a dangerous escalation that risks drawing NATO territory directly into the conflict. Poland is a NATO member and its security is integral to transatlantic security; an assault on a NATO member is an assault on the Alliance. This incident demonstrates why it is imperative that the US act decisively to deter further Russian provocations and protect our partners.
For the US to be a credible ally, words must be followed by action. The US must:
1. Fully fund, authorize, and expedite military and air-defense assistance to Ukraine so it can defend its territory and deny Russia easy operational advantages. The US has already provided substantial assistance, but continued, predictable support is essential to deter further aggression.
2. Strengthen NATO’s eastern defenses with robust air-defense systems and rapid response capabilities so that incursions into allied airspace are prevented or decisively countered. Collective defense is the bedrock of NATO; we must ensure it is real, not rhetorical.
3. Maintain and expand economic and targeted sanctions designed to degrade Russia’s ability to fund its war machine, and close loopholes that let matériel and shipping networks circumvent restrictions. Allied coordination on sanctions must be sustained and tightened.
4. Offer and help shape durable security guarantees for Ukraine in any settlement discussions that preserve Ukraine’s sovereignty and deter future aggression, rather than rewarding conquest. These guarantees should be tangible, enforceable, and backed by allied commitments.
The American people expect the President and Congress to act in defense of democracy, human rights, and international order. Allowing Russia to continue its campaign unchecked — or diluting our commitments to avoid difficult decisions — risks far greater costs in blood, treasure, and global stability.
I urge you to demonstrate bipartisan leadership now. Approve the necessary aid packages, authorize measures to strengthen NATO’s defenses, tighten sanctions, and make clear to Moscow that the US and its allies will not permit the erosion of the rules that have prevented major-power conquest in Europe for eight decades.