If Ukraine converts a missile-engine line to build Patriot interceptors, it will have to take that line away from something else—the deep-strike weapons now burning Russian refineries and cutting the supply routes into occupied Crimea.
That is the trade-off buried inside the offer Donald Trump made Volodymyr Zelenskyy at the NATO summit in Ankara: a license for Ukraine to build its own Patriots. Marc DeVore, a defense-industry scholar at the University of St Andrews, told Euromaidan Press that Kyiv could convert an existing engine line to Patriot production—but only by opening a shortfall in the missiles it is firing at Russia today. The interceptors Ukraine needs and the missiles Ukraine is winning with would be competing for the same factory.
DeVore chairs two expert groups that advise the UK Defence Ministry. In early July he put a question to both: could Ukraine realistically begin producing Patriots within a year? They reached the same conclusion he had. Probably not.
Engines are the hard part
"The two big challenges in producing missiles are the engines and the guidance systems," DeVore said. The guidance package is a closely held American secret; even long-licensed foreign producers still depend on US subcontractors for it, so a license can leave the dependence on American manufacturing fully intact.
Engines are the harder obstacle, and Ukraine starts at a disadvantage. Russia struck key parts of Ukraine's missile industry early in the war, DeVore noted, and engine shortages have since constrained efforts to scale up Ukrainian missiles such as the Neptune. Which is what makes the trade-off bite: the engine capacity Ukraine would need for Patriots is the capacity it is already using.
Those deep-strike weapons are not a side project. Ukrainian missiles and long-range drones have been hitting Russian refineries and the logistics feeding occupied Crimea for months—one of the few campaigns where Ukraine sets the terms.
Ukraine needs interceptors now
The timing is the cruelty of it. In the strikes of 6 July, Ukrainian air defenses downed none of the nearly 30 ballistic missiles Russia fired, according to the Ukrainian Air Force. Russia builds ballistic missiles faster than America builds the interceptors to stop them—roughly 800 a year against about 600—and a single Iskander can absorb two or three Patriot interceptors.
A Ukrainian production line, on the optimistic reading, could be running by the end of next year. A year is the floor, not a timetable. Ukraine's interceptor shortage is not a 2028 problem.
Whether the license is an alibi for Washington, an admission that the interceptors simply do not exist after the Iran war drained the world's stockpile, and what a real answer would require, is the subject of our full analysis of the Ankara Patriot promise.
