Why Does Poland Reject Hosting NATO Nuclear Weapons?

Poland's rejection of hosting nuclear warheads on its soil has triggered a domestic political rift over its position within the North Atlantic Treaty Organization (NATO) nuclear deterrence framework, as European fears intensify over a possible confrontation with Russia—media sources warning that Moscow might resort to using tactical nuclear weapons—amid growing questions about the future of American military presence on the European continent.

Domestic Political Dispute

According to Newsweek, after meeting with U.S. Deputy Secretary of Defense for Policy Elbridge Colby on Thursday, journalists asked Paweł Zalewski, Poland’s Deputy Minister of Defense, whether Warsaw would seek to join NATO’s nuclear sharing program and whether this could involve deploying American nuclear warheads on Polish territory.

Zalewski responded: "No. I want to say this clearly and unequivocally: Poland does not want nuclear warheads on its soil," while the Polish government reiterated its desire to participate in NATO’s nuclear mission without actually hosting the weapons themselves on national territory.

This distinction has sparked a domestic political dispute, as Zalewski’s statements drew criticism from figures loyal to President Andrzej Duda, leader of the right-wing Law and Justice party.

American Nuclear Weapons Deployment

Only nine countries worldwide are known to possess their own nuclear weapons programs, three of which are NATO members: the United States, the United Kingdom, and France. However, five other NATO member states host American nuclear weapons on their territories under the nuclear sharing program: Belgium, Germany, Italy, the Netherlands, and Turkey.

The program was established in the 1950s to counter the Soviet Union’s conventional military superiority in Europe, anticipating a potential escalation of the Cold War into a full-scale military conflict.

Not all non-nuclear NATO members participate in this program, reflecting the political and military sensitivity surrounding it.

Canada and Greece previously participated but later withdrew, while Denmark and Norway have explicitly opposed the deployment of nuclear weapons on their soil.

Spain’s 1982 NATO accession terms explicitly prohibit hosting nuclear weapons on its territory. France, which maintains its own nuclear arsenal, is the only NATO member that does not participate in the broader NATO nuclear planning group.

Why Poland Now?

Poland, located in the eastern wing of the alliance facing Russia, has increasingly emerged as a key military power on the continent since becoming, in 1989, the first country to break away from the Eastern Bloc communist alliance, two years before the Soviet Union’s collapse.

Today, Poland possesses the third-largest army in NATO, after the United States and Turkey, and allocates the highest percentage of its GDP to defense among NATO members—4.3%. It shares geographical borders with Ukraine, Russia’s Kaliningrad exclave, and Belarus, a Moscow ally.

This year may be particularly perilous for Poland, as the Kremlin seeks to increase pressure on NATO, coinciding with stalled Russian progress in Ukraine and Kyiv’s costly campaign of long-range attacks targeting Russian gas infrastructure.

Reports have intensified regarding Moscow’s potential plans to escalate the situation—either through new troop mobilizations or even military operations on NATO member territory—especially following a surprise visit by U.S. Central Intelligence Agency Director John Ratcliffe to Moscow early this week. According to sources close to the Kremlin, President Vladimir Putin may choose to use tactical nuclear weapons to decisively end the war.

Amid these fears, Newsweek reported that analysts believe deploying American nuclear weapons on Polish soil could strengthen deterrence and convince Russia that the United States and NATO seriously consider responding with nuclear weapons to any nuclear attack on the alliance’s eastern flank.

Poland joining the nuclear sharing program could thus appear as a direct threat to Russia, which would interpret such a move as clear evidence of NATO and U.S. threats against it.