The United States has floated a deal linking Ukraine’s NATO membership to a withdrawal from Donbas, but the security guarantees on offer fall short of the alliance’s collective defence clause. Zelenskyy revealed the proposal at a press conference Thursday, saying American negotiators asked whether Ukraine would cede the eastern region in exchange for a path into NATO. The catch: Washington described the guarantees as “similar to Articles 4 and 5” — not Article 5 itself.
Zelenskyy said the US raised the question for the first time during recent talks: “What if Ukraine joins NATO? Would Ukraine withdraw from Donbas?” He stressed nothing is agreed and all details remain under discussion. The US explicitly ruled out sending American troops to Ukrainian soil under any security package. Guarantees would mirror Articles 4 and 5 of the NATO treaty — triggering consultation and political commitment but not automatic military response. Any deal would come without recognition of occupied territories as Russian. Zelenskyy committed to putting any agreement to a public referendum before ratification.
For NATO watchers, the key detail isn’t territory — it’s the guarantee tier. Zelenskyy says Washington offered “something similar to Articles 4 and 5,” not Article 5 itself. Article 4 triggers consultation; Article 5 triggers collective defence. The alliance’s Article 4 cable sabotage response showed how consultation works in practice. Analysts assess that a new “Article 4.5” tier could let the US extend deterrence without unanimous alliance consent — a precedent that could redefine NATO’s security architecture. Observers note that if Ukraine accepts, every aspirant and every border state will ask: what tier do we get?
The proposal mirrors Russia’s 1997 borders demand in reverse. Moscow wants NATO pulled back; Washington now offers NATO membership tied to territorial concession. Both positions are maximalist, analysts say. The negotiation space, analysts say, exists only in the gap between Article 4 and Article 5 — a triangular commitment trap for Russia. Analysts warn that if Russia rejects the deal, Moscow loses its primary war aim of Ukrainian neutrality. If Russia accepts, analysts say, it legitimizes NATO on its border. Zelenskyy asked for Article 5 as an “absolute minimum.” The US countered with a middle tier. A Prosperity Plan tied to “clearly identified funding sources” would accompany any settlement.
The US offer creates a mirror-image trap. Russia demanded NATO retreat to 1997 borders. The US now offers NATO expansion to Ukraine’s border — but only if Kyiv surrenders Donbas. Both sides stake maximalist positions. The only room to move, observers say, lies in the undefined space between Article 4 consultation and Article 5 collective defence. Observers assess that gap is where the next European security order will be written.
What is the difference between NATO Article 4 and Article 5? Article 4 requires allies to consult when a member’s territorial integrity is threatened. Article 5 treats an attack on one ally as an attack on all, triggering collective defence. “Similar to Articles 4 and 5” suggests consultation plus political commitment without automatic military response — a middle tier that avoids the unanimous NATO ratification that Article 5 requires, analysts note.
Zelenskyy says the US proposal is unprecedented but unfinalized. No American troops. No territory recognized as Russian. A referendum would decide. Analysts say the guarantee tier — not the land swap — will set the precedent for NATO’s future. Check back for updates.