Moscow says work is "under way" on transferring Ankara's Russian air-defence systems to a third country — a move that could unlock Turkey's return to the F-35 programme and end the alliance's ugliest procurement quarrel.
Published 1 October 2026 · 06:00 GMT
Nine years of poison in the NATO bloodstream may finally have an antidote. On Wednesday the Kremlin said — twice, in two days' choreography — that Turkey's Russian missiles could leave Turkey.
The sequence was deliberate. On Saturday, in New York after the UN General Assembly's high-level week, Sergei Lavrov floated the trial balloon: Moscow, he said, could agree to move the S-400 air-defence systems to "a country that is responsible and maintains friendly relations with Russia," adding that Russia would "be ready to transfer the S-400s to such a country when there is a request."
On Wednesday, answering Agence France-Presse, Dmitry Peskov confirmed the balloon had a basket: "The issue is on the agenda, relevant work is being carried out and relevant contacts are taking place." Two spokesmen, four days apart, saying the same thing is not chatter. It is a coordinated signal.
Strip away the choreography and what remains is a sentence with the force of a treaty: Russia has agreed, in principle, to let Turkey dispose of the most politically radioactive weapons deal of the decade. No transfer has been requested — Lavrov said Moscow would be "ready to transfer the S-400s to such a country when there is a request" — and no buyer has been named. But the door, after nine years bolted shut, is open.
The prize is not the missiles. It is everything the missiles have been blocking: Turkey's readmission to the F-35 programme, the lifting of the CAATSA sanctions cloud, and the normalisation of the alliance's most important southeastern relationship. Each of those prizes has a price, and each price is paid in a different currency — hardware, sovereignty, and trust.
There is a fourth currency too: precedent. The end-user certificate — the clause Lavrov invoked — is one of the quietest instruments in the arms trade, and one of the most powerful. Russia wrote itself a veto over the afterlife of its own exports. How that veto gets exercised now will be studied by every arms exporter and every hedging middle power on earth.
The S-400 was never really about air defence. It was a $2.5bn argument about who gets to decide Turkey's alliances — and arguments that expensive eventually get settled.
The quarrel predates the missiles by decades. Turkey joined NATO in 1952, anchoring the alliance's southern flank through the Cold War — the country that hosted Jupiter missiles during the Cuban crisis, that guarded the Bosphorus, that bled in Korea. The alliance bargain was always transactional, but for sixty years it held.
The break began in the air. In November 2015, Turkish F-16s shot down a Russian Su-24 near the Syrian border — the first time a NATO member had downed a Russian warplane in living memory. Relations froze; Moscow imposed sanctions; then came the 2016 coup attempt, after which Ankara's fury at Washington's refusal to extradite the Pennsylvania-based cleric it blamed poisoned the well for years.
Into that breach walked the S-400. Turkey had spent years asking Washington for Patriot batteries — requests that stalled, in Ankara's telling, on technology transfer and price. Moscow offered its flagship system with fewer questions and a delivery date. The $2.5 billion deal, signed in 2017, was as much a message as a purchase: Turkey would arm itself where it chose, and the alliance would learn to live with it.
Washington's answer was the bluntest instrument in its sanctions arsenal. CAATSA — the Countering America's Adversaries Through Sanctions Act, passed by Congress in 2017 — was aimed at Russia, Iran and North Korea; Turkey became its first NATO test case. In 2019, the year the batteries rolled off Russian transport planes, Ankara was expelled from the F-35 programme and its defence procurement agency was sanctioned. The message was equally blunt: choose.
The ultimatum came in the summer of 2019. Washington told Ankara to cancel the Russian deal or face expulsion from the F-35 programme; Russian cargo planes were already landing at Mürted air base outside Ankara. Erdogan chose the missiles. Within weeks, the Pentagon announced Turkey's removal from the programme, and CAATSA sanctions on a NATO ally followed in December 2020 — the first time the law had ever been turned on a member of the alliance.
The F-35 expulsion was the wound that never closed. Turkey was not a mere customer; it was a partner — one of the original consortium members, building components for jets rolling off the line in Fort Worth. Being cut out cost Turkish industry dearly in lost work and froze Ankara out of the fifth-generation club just as the technology became the currency of modern air power.
The technical argument was always the sharpest. American officials insisted the S-400's radar, operated alongside the F-35, could learn the stealth jet's electronic signature — compromising not just Turkey's jets but the entire allied fleet. Ankara countered that the systems would stand alone, never networked with NATO assets, and that a sovereign country decides its own air defences. Both arguments were sincere. Neither side ever believed the other.
Ankara also had a domestic audience. The S-400 purchase played powerfully at home — proof, in the government's telling, that Turkey bowed to no one. Every American threat that followed only raised the political cost of backing down. By the time the batteries landed, the missiles were no longer just hardware; they were a sunk cost of national pride.
And so the batteries sat. Test-fired over the Black Sea, parked in hangars, and turned into a $2.5bn monument to the hedging strategy of the Erdogan era. Nine years of poison, as the lede says — and now, suddenly, an antidote on offer from the last capital anyone expected to provide it.
The stakes are the single most corrosive procurement dispute in modern NATO history. Turkey signed for the S-400s in 2017, took delivery in July 2019, and was expelled from the F-35 Joint Strike Fighter programme that same year — losing not just the jets but its role as a manufacturing partner. Washington then sanctioned Turkey's defence procurement agency under CAATSA.
Ankara never fired the systems in combat; they were tested, parked, and turned into a $2.5bn monument to the Erdogan era's hedging strategy. The missiles became the symbol of everything Washington distrusted about Turkish strategic autonomy — and everything Ankara resented about being treated as a junior ally.
Geopolitics: For NATO, Turkey is geography wearing a flag — the Bosphorus, the Black Sea littoral, the Syrian border, the airbase at Incirlik. A Turkey drifting toward Moscow's orbit was the alliance's nightmare scenario; a Turkey fully back inside is its southeastern anchor. The transfer talks are the hinge on which that future swings.
The Black Sea is the quiet theatre in all of this. Turkey controls the straits under the Montreux Convention — the 1936 treaty governing warship passage — and has kept the sea's balance through the Ukraine war by closing them to belligerent warships. A Turkey reconciled with NATO is a Turkey whose straits policy anchors the alliance's entire Black Sea posture.
For Russia, the S-400s were never just an export — they were a wedge driven into the alliance, and wedges can be repositioned. Consent to a transfer keeps Moscow inside every future conversation about the systems' fate: the veto is leverage that outlives the sale. Lavrov's "responsible country" formula is the price of the hinge, denominated in control.
Macroeconomics: The $2.5bn is sunk; the real economics are the exports the sanctions freeze. Defence exports at $6.3bn through August, the TB2 drone a global brand, a trailing twelve-month total of $10.9bn — and all of it negotiating under a CAATSA cloud that closes NATO procurement markets worth far more than the batteries' resale value. A cleared file is worth multiples of the hardware.
There is also the buyer's economics. An S-400 battery at a discount — second-hand, Moscow-blessed — is the bargain of the decade for a Gulf treasury. But the discount comes with strings: Russian consent, the shadow of Russian technicians, and American scrutiny. Cheap missiles, expensive politics — the oldest equation in the arms trade.
There is a war running through every calculation. Russia has deployed S-400 batteries in Ukraine, where Ukrainian forces have repeatedly targeted them — which is precisely why Lavrov's no-onward-transfer condition names Ukraine explicitly. Moscow will not bless a transaction that risks its premier air-defence system ending up studied, struck, or turned against its own forces. The buyer's distance from Kyiv is not a preference; it is the condition.
Demographics: The Gulf's military buildups are driven by young, oil-rich states converting hydrocarbon wealth into hard power; Turkey's own defence industry employs a generation of engineers raised on the hedging doctrine. Arms deals are demographic statements about who is young, who is rich, and who is arming — and the Gulf answers all three.
Historical patterns: Middle powers have hedged between blocs for a century — Nasser between Washington and Moscow, India buying Russian systems to this day while deepening ties with Washington. The pattern is always the same: buy from the East, keep the West close, pay in sovereignty. Turkey is writing the 21st-century edition, and the verdict from Jakarta to Riyadh is being watched.
There is also a sanctions precedent with no road map. CAATSA had never been turned on a NATO ally before Turkey; every step since — the expulsion, the sanctions, the waiver debate — has been improvised. If the file closes with Turkey back in the F-35 and sanctions lifted, it becomes the template for how the alliance absorbs a member's defiance. If it doesn't, it becomes the warning.
Structural trends: The deeper story is industrial. Turkey's defence sector — from its combat drones to its indigenous fighter prototype — has been climbing the technology ladder while the S-400s gathered dust. The transfer talks arrive at the precise moment Ankara needs Russian hardware least and Western markets most. Technology made the hedge obsolete; diplomacy is finally catching up.
Moscow's conditions are precise and revealing. Lavrov stressed the original contract's end-user certificate: Turkey cannot legally move the systems without Russian consent. The recipient must be "responsible," friendly to Russia, and — the tell — must guarantee the batteries will not end up in Ukraine, citing past cases where weapons obtained via third countries travelled onward.
That last condition narrows the field sharply. Reports in July suggested Ankara was sounding out a Gulf buyer — a rich, Russia-friendly state that would keep the hardware far from Kyiv. Whether such a triangle can be squared — Moscow's consent, a Gulf chequebook, Washington's blessing — is the diplomatic geometry of the coming months.
Washington has not moved in nine years on the core point: the S-400 and the F-35 cannot coexist, because the Russian radar would learn the jet's secrets. But Trump's July remark — readmission is "something certainly we'd consider" — was the first presidential daylight in years. Congress, which wrote CAATSA, moves slower than presidents; any return will have to survive the Hill.
Congress is where presidential daylight goes to be tested. Senators placed holds on the long-delayed F-16 sale to Turkey for years — finally approved in 2024 — and the legislators who wrote CAATSA have shown no appetite for waiving it cheaply. Trump's "we'd consider" will need the patience of the Senate, or at least the absence of its organised opposition.
Moscow is practising the art of the possible — turning a depreciating asset into diplomatic capital. Approving the transfer costs Russia nothing it still uses, buys goodwill with Ankara, and, via the end-user veto, keeps a hand on the hardware's future. It is leverage monetised, exactly as the Eastern reading has it.
Ankara wants it simple and maximal: full return to the F-35, CAATSA lifted, no humiliation ritual. Erdogan's team reads the moment as vindication — the hedge worked, the industry grew, and now the West comes back to the table. The risk, as always for middle powers holding a strong hand, is overplaying it.
The Gulf does pure realpolitik: discounted top-tier air defence, a signal of independence from Washington, a relationship receipt with Moscow. The constraint is Washington's — any Gulf state buying Russian systems invites its own CAATSA conversation. The chequebook is willing; the politics are delicate.
Kyiv, meanwhile, watches with the cold arithmetic of a country at war. Every S-400 battery that leaves the Russian orbit is one less system Moscow can service, study, or redeploy — but a battery sold to a Gulf state is also a battery Ukraine will never get. The no-Ukraine condition suits Moscow; it merely fails to harm Kyiv. That is the difference between a concession and a favour.
Brussels will take any outcome that ends the quarrel. A NATO without the S-400 fight is a NATO that can talk about the Black Sea, Syria and burden-sharing instead. Nobody in the alliance's headquarters will mourn the batteries' departure.
The defence industry has its own vote. Turkish contractors — from drone makers to shipyards — have watched CAATSA complicate everything from export licences to joint ventures. For them, the transfer talks are not diplomacy; they are market access. A cleared file means NATO tenders, Western partnerships, and an end to the compliance departments' longest headache.
Meanwhile the timing is not accidental. Turkey's defence industry is having its best year on record: $6.3bn in exports through August, up 16.2% year-on-year, with a trailing twelve-month total of $10.9bn. Ankara negotiates this from strength — a supplier, not a supplicant — and a solved S-400 file would let it sell drones and armoured vehicles to NATO markets currently closed by the CAATSA cloud.
First, the request. Lavrov was explicit: Russia acts "when there is a request." Until Ankara formally asks, everything is choreography. Watch for the diplomatic note — or the leak of one.
Second, the buyer's identity. The Gulf reporting from July is the only public lead; a serious name would transform the talks from signal to transaction. The tell will be who stops denying interest.
Third, Washington's sequencing. F-35 readmission and CAATSA relief are different legal animals — one a programme decision, the other a sanctions waiver that runs through Congress. The order in which they move will reveal how much of Trump's July openness survives contact with the Hill.
Finally, the price of the batteries themselves. A $2.5bn system, lightly used, politically radioactive, sold with a Russian veto attached — there is no market comparable. The number, when it leaks, will tell us who needed the deal most.
Finally, watch the leader-to-leader channel. This file has always moved fastest when Erdogan and Trump talked directly — the July summit remark came from exactly such a conversation. Personal diplomacy helped build the S-400 crisis; it may be what finally dismantles it. The batteries are hardware. The deal is psychology.
And watch what replaces the batteries. Turkey's air defences will not sit empty — its indigenous long-range Siper system is in development, and the question of what guards Turkish skies next is inseparable from the question of who Turkey trusts to sell it. The S-400s' departure would close one chapter of Turkish air defence and open another, written in Ankara rather than Moscow.
Washington's reading is cautious relief. The S-400 saga poisoned every NATO conversation about Turkey for seven years; a Russian-blessed exit ramp lets the alliance reclaim its southeastern flank without anyone admitting defeat. Trump already telegraphed the landing zone in July: readmission to the F-35 is "something we'd consider."
But the Western caveat is sharp. Lavrov's conditions — no onward transfer, a "responsible" buyer — give Moscow a veto over the entire unwinding and a lever into whoever buys. NATO would be swapping one Russian entanglement for a Russian-approved transaction. The Pentagon will want the F-35's secrets fenced off with legal concrete, not handshakes.
Moscow's reading is leverage, monetised. The S-400s were always a strategic asset even sitting in Turkish hangars — and now Russia gets to play kingmaker over their disposal, name the buyer, pocket the goodwill, and pocket, quite possibly, a fee. Lavrov's "responsible country" language is a velvet rope: Russia decides who is responsible.
Beijing watches with professional interest. The episode is a case study in how arms sales become geopolitical options contracts — sell the system, keep the veto, collect twice. China's own export customers are taking notes on the end-user certificate as an instrument of long-term influence.
The Global South reads this as the rich world's arms bazaar doing what it always does: the same weapons are strategic threats or strategic assets depending on whose hangar they sit in. A Gulf state buying Turkey's S-400s with Moscow's blessing and Washington's wink would be the purest distillation of how the arms trade really works — politics first, principles later.
There is a sharper Southern lesson too. Turkey's hedging — buying Russian while staying in NATO, getting punished, then negotiating its way out from a position of industrial strength — is the playbook every middle power studies. The verdict from Jakarta to Riyadh: sovereignty is expensive, but it has a resale value.
