Ukrainian officials say air defenses thwarted an intense Russian air attack on Kyiv and shot down all missiles aimed at the capital with the help of Western-supplied weapons. The assault early Tuesday came as European leaders sought new ways to punish Russia for the war and a Chinese envoy sought traction for Beijing’s peace proposal. Loud explosions boomed over Kyiv as the nighttime attack combined Russian missiles launched from the air, sea and land. A Ukrainian official said Russia’s latest attack on Kyiv was “exceptional in its density." An air force spokesperson says the bombardment across Ukraine included six Russian Kinzhal aero-ballistic hypersonic missiles, the most fired in a single attack in the war.