The United States covertly delivered a new long-range missile system to Ukraine, which was promptly used to attack a Russian military airfield in Crimea and Russian troops in the country's southeast. President Biden approved the shipment of over 100 of these missiles in a policy shift, part of a $300 million aid package. The decision was kept secret to avoid alerting the Russians. The strike using the new missiles caused significant damage, and Ukraine is in need of air defense systems due to continued Russian bombardment. The situation remains tense as Russian troops advance into eastern Ukraine.