Italy-hosted U.S. nuclear weapons could soon have company across a wider swath of Europe, as Washington weighs extending its atomic umbrella to eastern NATO members increasingly anxious about conventional military commitments. The move would formalize what Poland and Baltic states have been requesting for months: access to dual-capable aircraft (DCA) platforms—warplanes certified to deliver both conventional and nuclear payloads—on their soil.
Why This Matters
• Italy currently hosts the most U.S. nuclear weapons in Europe, with approximately 40-50 tactical B61 bombs stored at Aviano air base in Friuli-Venezia Giulia and Ghedi air base in Lombardy.
• Poland has publicly requested nuclear basing rights, aiming to join the six European NATO members already in the nuclear-sharing program.
• Legal disputes over the Non-Proliferation Treaty may resurface if additional countries host American atomic arsenals, with Russia already threatening to retarget its missiles at any new deployment sites.
The Current Nuclear Landscape
Six European nations presently operate under NATO's nuclear-sharing framework: Belgium, Germany, Italy, the Netherlands, Turkey, and the United Kingdom. These countries do not own the weapons—an estimated 100 U.S. tactical bombs, mostly B61-class gravity devices—but their air forces train to deliver them in wartime under strict American authorization. Italy shoulders the largest share among them, a legacy of Cold War posture that has persisted through successive modernization cycles. The warheads remain locked under U.S. military custody; Italian F-35 and Tornado pilots rehearse procedures in annual drills yet lack unilateral launch authority.
The U.K., while part of the nuclear-sharing framework, has historically maintained distinct posture through its sovereign Trident submarine deterrent. France similarly maintains a national force de frappe and has never participated in NATO's nuclear-sharing arrangements. That calculus shifted marginally in 2026, when Paris unveiled a "forward deterrence" concept offering temporary deployment of French nuclear-capable Rafale jets to allied territory during crises—an initiative Poland joined earlier this year, signaling Warsaw's appetite for any route to atomic reassurance.
Why Eastern Europe Wants the Bomb
Three U.S. officials briefed on classified deliberations told the Financial Times that representatives from Poland, Estonia, Latvia, and Lithuania have all probed the feasibility of basing DCA squadrons on their territories. Their rationale centers on strategic geography: placing nuclear-capable forces closer to Russia's western frontier raises the cost of aggression and deters miscalculation. Warsaw views the ask as a natural extension of its outsized conventional defense spending—Poland allocated roughly 4% of GDP to defense in 2025, the highest proportion inside NATO—and a hedge against potential American retrenchment.
Former Polish president Andrzej Duda made the desire explicit in a 2025 television interview, calling for U.S. nuclear weapons to be "forward-deployed to Polish soil" under the same custody model used in Italy and Germany. Current Polish leadership has echoed the sentiment, albeit more quietly, conscious that public nuclear diplomacy can inflame Moscow. The Baltic republics, each with populations under 2 million and land borders meters from Russia, see DCA access as insurance against conventional overrun, even if the likelihood of actual nuclear use remains vanishingly small.
Washington's Balancing Act
Pentagon strategists acknowledge the political utility of nuclear burden-sharing expansion at a moment when conventional burden-sharing has become a contentious transatlantic flashpoint. By hinting at readiness to station additional B61 units eastward, the U.S. Department of Defense attempts to demonstrate that reductions in forward-deployed troops or aid packages will not erode core Article 5 guarantees. Two sources familiar with the internal debate stressed that no agreement is imminent; the discussions remain exploratory and confined to classified NATO channels.
Technically, adding sites is straightforward. The B61 requires secure underground vaults, perimeter hardening, and dedicated American custodial detachments—costly but replicable infrastructure. The diplomatic complications loom larger. Germany and the Netherlands have domestic constituencies openly skeptical of hosting nuclear arms; expanding the club could reignite anti-nuclear movements across the continent. More crucially, Italy and other current hosts may question whether diluting the exclusivity of nuclear-sharing undermines their strategic value to Washington or whether it strengthens collective deterrence.
What This Means for Residents
For Italians living near Aviano or Ghedi, the prospect of Poland or Estonia joining the nuclear-hosting roster does not alter day-to-day safety but shifts the geopolitical center of gravity. If Warsaw secures basing rights, Russia will almost certainly reposition tactical weapons in Kaliningrad or Belarus to maintain parity, tightening the ring of atomic firepower around the Baltic Sea. That in turn raises the accident risk, the potential for inadvertent launch, and the stakes of any NATO-Russia border incident.
Italy's role as nuclear custodian predates the current security architecture by half a century; its bases were chosen for southern access and logistical depth. Extending that architecture eastward invites greater scrutiny of the legal framework underpinning nuclear-sharing. Critics—including many non-NATO states—argue that training non-nuclear-weapon-state pilots to drop American bombs skirts Articles I and II of the Non-Proliferation Treaty (NPT), which forbid transfer of control over nuclear arms. NATO maintains that no transfer occurs because warheads stay locked until authorized use in wartime, at which point treaty obligations lapse. The argument has held for five decades, but adding members could prompt fresh challenges at the International Atomic Energy Agency or the NPT Review Conference.
Moscow's Countermoves
Russia has not waited for formal announcements. Kremlin spokesman Dmitry Peskov stated in February 2026 that stationing U.S. nuclear weapons in Estonia would trigger reciprocal targeting of Russian missiles at Estonian soil. In May, Moscow and Minsk conducted joint nuclear exercises involving tactical warheads pre-positioned in Belarus, a transparent signal of Russia's willingness to escalate posture in tandem with NATO moves. Moscow's revised nuclear doctrine, published in November 2024, lowered the threshold for atomic use in response to conventional attacks that threaten Russia's territorial integrity—a clause designed to deter precisely the kind of forward deployment now under discussion.
Historically, Russia has framed NATO nuclear expansion as "irresponsible provocation," with Foreign Minister Sergey Lavrov warning in 2021 that it risks igniting a "hot conflict." That rhetoric has intensified as the prospect of Polish or Baltic hosting becomes concrete. European security analysts caution that even exploratory NATO deliberations can trigger Russian force posture adjustments—more bombers at airbases near the Finnish border, submarine patrols in the Baltic, tactical nuclear drills—that create escalation ladders independent of any actual weapon transfers.
Treaty Constraints and Legal Gray Zones
The Treaty on the Prohibition of Nuclear Weapons (TPNW), which entered into force in 2021, explicitly bans signatory states from hosting atomic arms on their territory. Neither the United States nor any NATO member has ratified the treaty, dismissing it as redundant to the NPT and strategically naïve. Advocates counter that the treaty reflects emerging customary international law and that expanding nuclear-sharing contradicts the disarmament spirit of NPT Article VI, which obligates nuclear-weapon states to pursue negotiations toward complete disarmament.
Meanwhile, the collapse of the Intermediate-Range Nuclear Forces Treaty in 2019 and the expiration of New START leave the world without binding caps on medium- and long-range missile arsenals. That vacuum makes every incremental shift—whether more NATO hosts or more Russian tactical deployments—harder to walk back through arms control. Legal scholars at the International Court of Justice have noted that while nuclear use is not categorically illegal, it must comply with international humanitarian law principles: distinction, proportionality, and avoidance of superfluous suffering. The indiscriminate effects of even tactical nuclear weapons likely violate those norms, yet no binding prohibition exists.
What Comes Next
No timeline has been set for concluding the U.S.-NATO consultations. Poland's defense ministry declined to comment beyond reaffirming its commitment to alliance security. The Italian Ministry of Defense has not indicated whether Rome views potential expansion favorably or as a distraction from long-overdue modernization of its own nuclear-capable F-35 squadrons. Germany's coalition government remains internally split, with the Greens opposing any hint of expanded atomic presence and the Christian Democrats emphasizing deterrence credibility.
For Italian citizens, the immediate consequence is rhetorical rather than material: Italy's nuclear-hosting status, once largely invisible in public debate, now sits within a broader and more contentious European conversation. If Poland and the Baltics succeed in their lobbying, the strategic logic that justified Aviano and Ghedi—distance from the Soviet front line, reinforcement flexibility—will have inverted, placing the heaviest nuclear concentration on NATO's eastern edge. Whether that enhances security or accelerates a new arms race depends on choices still being made in Brussels, Washington, and Moscow.
