Trump has backed off a promise to let Ukraine manufacture its own Patriot air defense interceptors, telling reporters that handing over the underlying technology was "a hard thing to give away" during a cabinet meeting at Camp David. The reversal is likely to unsettle Kyiv, which has spent the past year lobbying for both more interceptors and the means to produce its own, amid a global shortage that has been compounded by the volume of Patriot and Tomahawk stock expended in Washington's confrontation with Iran.