He said that Ukraine does not have the production of missiles for such systems, so reserves are used.

“Personally, with all the defense ministers of those countries that also have S-300s in service, we are negotiating the possibility of replenishing this stock of missiles from their warehouses and arsenals,” RIA Novosti quotes Reznikov’s statement following talks with Spanish Defense Minister Margarita Robles .

Earlier, White House spokesman John Kirby said that the United States is working closely with allies on the issue of additional supply of Ukraine with air defense systems.