Ukraine demanded that European countries transfer to it 10% of their existing IRIS-T and Patriot missile interception systems. Ukraine proposes that these countries immediately provide missiles from their military stocks, and then receive replacement interceptors from shipments already contracted with Ukraine through EU loan financing. There is no approved collective agreement to transfer 10% of these stocks. Earlier discussions between European defense ministers on a similar stock exchange mechanism did not produce new supply commitments. —. The proposal highlights a fundamental problem facing Ukraine and its European supporters: missiles are needed immediately, while industrial production operates on a schedule measured in months or years.