US nuclear sharing shifts east

Three decades after the Cold War pushed American nuclear weapons out of Eastern Europe, Washington is discussing whether to move them back. The United States is in active talks about deploying nuclear weapons to Poland and some Baltic states, according to the Financial Times. No agreement is close, but the talks have already opened a wider European argument: whether the continent’s nuclear future sits under the American NATO system, the French presidency, or some uneasy mix of both.

Why expansion takes a decade

NATO’s nuclear sharing system places US gravity bombs in allied countries whose pilots train to deliver them. The legal machinery is not a single NATO treaty vote. It rests on bilateral executive agreements between Washington and each host government, coordinated through NATO’s Nuclear Planning Group, the forum where all members except France discuss nuclear policy.

No host country has ever held a formal parliamentary vote to accept the weapons. They arrived through Cold War executive arrangements and stayed there.

Moving that system to Poland or the Baltics would take years, not months. Each site needs hardened underground vaults, certified command posts and dedicated security perimeters. Existing facilities in Western Europe have absorbed billions in upgrades over years, and some remain incomplete. A new Eastern European site would realistically become operational in the mid-2030s at the earliest.

The political message, however, lands as soon as the talks become public. The hardware can wait. The alignment cannot.

Three nuclear patrons, one continent

Poland and the Baltic states are now being courted by overlapping nuclear proposals. Washington offers physical weapons through NATO. France, through Emmanuel Macron’s "advanced deterrence" initiative launched in March 2026, offers a European umbrella of another kind: coordination on French nuclear planning, without placing weapons on allied soil and without shared command.

Norway joined the French initiative in May but explicitly reaffirmed NATO as its primary security guarantee. The French foreign ministry describes the two tracks as "distinct and complementary." Le Grand Continent puts it more bluntly: parallel initiatives are creating a "growing hydra" that fragments allied coherence.

If Washington offers Poland actual bombs, France has a credibility problem. The French deterrent is a presidential promise to consult. NATO sharing creates mutual obligations backed by forward-deployed weapons. IFRI presents the two systems as reinforcing each other. In practice, they are very different instruments: one puts hardware in the host country, the other offers a discussion about French strategy.

Germany is in the most awkward position. Berlin hosts US bombs and has joined France’s nuclear steering group, which gives it a place in the strategic conversation but no hand on the French button. If nuclear sharing shifts eastward, Germany’s Cold War role as NATO’s nuclear anchor becomes smaller. Die Linke has demanded the full withdrawal of US weapons from German soil. The governing coalition is saying nothing.

The accountability gap

The talks expose a familiar European problem: major security choices often move faster than democratic scrutiny. No country currently hosting US nuclear weapons ever voted in parliament to accept them. The 2026 NPT Review Conference, the global treaty review meant to limit nuclear proliferation, made the tension visible. Western states defended nuclear sharing as treaty-compliant. Non-nuclear states pushed back.

Lithuania’s constitution still prohibits weapons of mass destruction on its territory. Changing that would require a supermajority, and no one has yet tested whether such a majority exists.

According to MTV Uutiset, Finland is assessing changes to its nuclear legislation to allow weapons transit in wartime, while keeping the French initiative at a distance. Sweden’s largest peace movement has launched an election watch tracking party positions on nuclear policy ahead of autumn voting.

No bombs will arrive in Eastern Europe before the mid-2030s. But the political architecture is being assembled now: which countries line up behind which nuclear patron, which parliaments get a vote, which executives decide quietly, and which constitutional limits survive the pressure. In most countries where the issue is already live, the public debate has barely begun.