Zelenskyy said he and Trump’s envoy, retired Lt. Gen. Keith Kellogg, had “a productive conversation” about strengthening Ukrainian air defenses, joint arms production and purchasing U.S. weapons in conjunction with European countries, as well as the possibility of tighter international sanctions on the Kremlin.

Russia launched four missiles and 136 drones into Ukraine overnight into Monday morning, according to Ukraine's air force, after President Donald Trump said the U.S. would provide Kyiv with more Patriot surface-to-air systems to help defend against Russia's nightly bombardments.