Washington is unlikely to reach an agreement with Ukraine on the joint production of Patriot interceptor missiles before this winter, U.S. "A long-term production agreement will not be concluded before this winter. Whitaker said PAC-3 Patriot interceptors remain subject to strict U.S. export controls. Whitaker's remarks come after the Trump administration has sent mixed signals in recent weeks over whether Washington will allow Ukraine to produce Patriot interceptors under license. Kyiv has repeatedly urged its Western partners to expand deliveries of Patriot systems and interceptors as Russia intensifies its aerial campaign ahead of another winter.