Inside the NATO PA's Vilnius Declaration: A Parliamentary Agenda for a Stronger Alliance

Deterrence and Defence: Pushing for a "Quantum Leap"

To counter the identified threats, the declaration moves beyond general pledges of support to demand a transformative upgrade in Allied military posture, specifically calling for a "quantum leap" in deterrence and defence. The geographical emphasis is heavily weighted on the eastern flank, where NATO’s forward defence capabilities are being continuously strengthened .

The text insists on an ironclad, non-negotiable commitment to collective defence under Article 5 of the Washington Treaty. As a concrete priority for the upcoming Ankara Summit, Lithuanian President Gitanas Nausėda urged that a new NATO Integrated Air and Missile Defence Plan must be a key deliverable, highlighting the urgent need to shield Allied territory from advanced aerial threats . This reflects a shift from political signaling to demanding tangible, deployable military plans.

Ukraine: An Absolute Priority for Stability

The declaration underlines that a strong, sovereign, and independent Ukraine is vital to the broader stability of the Euro-Atlantic area . Sustaining long-term support for Ukraine was identified by the NATO PA President as one of four clear parliamentary priorities moving forward. The message from Vilnius was unambiguous: Ukrainian victory and sovereignty are directly linked to Allied security, a framing that connects military aid not as charity but as a direct investment in NATO’s own defensive perimeter. NATO Deputy Secretary General Radmila Shekerinska reinforced this by stating that Ukraine's battlefield innovation demonstrates the continuous adaptation required for modern deterrence .

Hybrid Threats: The War Below the Threshold of War

While the conventional threat is severe, the declaration dedicates significant attention to the shadow war being waged against Allied societies. It states that "cyberattacks, sabotage, economic coercion, and other hybrid tactics target Allied societies every day" . This acknowledgement of a persistent, multi-domain campaign of destabilization represents a parliamentary consensus that the line between peace and conflict is being intentionally blurred by authoritarian rivals.

The declaration specifically welcomes NATO's operational steps to counter this. It salutes the prompt launch of Baltic Sentry and the establishment of NATO Task Force X, both of which are designed to strengthen the protection of critical infrastructure in the Baltic Sea and neutralize the threat posed by the Russian shadow fleet .

The Budget: From 2% Obligation to a 5% Reality

The session drew a hard line on defence economics. The declaration reiterates that the legacy "2% of GDP target is not an optional requirement but a binding obligation" for all citizens of the Alliance . Looking forward, the parliamentarians aggressively backed the new fiscal baseline established at the 2025 Hague Summit, which commits Allies to investing 5% of GDP annually on defence by 2035 .

Crucially, the Vilnius text pushes for an acceleration of this timeline. It urges Allies to operationalize the 5% commitment with urgency and create credible national plans to achieve it well before the end of the 2035 horizon . The parliamentarians framed this massive spending increase not as a political target but as a prerequisite for the warfighting readiness required under NATO’s core regional plans.

Italy's Return to a Leadership Role

In the wider context of the session, Italy signaled its intent to move from a historically cautious defensive posture to a front-footed leadership role. The Italian delegation was actively engaged during the Vilnius session, with the Italian Chamber of Deputies publishing the full text of the declaration and related preparatory documents .

This political re-engagement was matched by financial signal-sending. Just days before the session, Foreign Minister Antonio Tajani confirmed that Italy is "prepared to boost its defence spending to hit NATO's 5 percent of GDP threshold" . However, Tajani coupled this ambition with a request for greater EU budget flexibility on energy-related spending rules, underscoring the domestic political balancing act required for Italy to meet the Alliance’s historic military investment targets .

The Road to Ankara: A Summit Demanding Deliverables

The Spring Session was explicitly structured as a parliamentary shaping exercise for the forthcoming NATO Summit in Turkey. The declaration serves as a legislative mandate to Alliance heads of government, demanding that Ankara produces concrete military outputs rather than political rhetoric. Lithuanian President Nausėda’s call for a finalized Air and Missile Defence Plan encapsulated this mood .

NATO-EU Cooperation: Complementary, Not Duplicative

On institutional relations, the parliamentarians walked a careful line. The declaration leans on the framework of the NATO-EU Joint Declaration on Cooperation to reconcile military and civilian resilience . While welcoming burgeoning European defence efforts as complementary, the text issues a clear institutional warning: European defence must strengthen NATO, not duplicate it. It further emphasizes that the U.S. military presence in Europe remains critically important, rejecting any implication that European strategic autonomy might come at the expense of the transatlantic bond .