KYIV, Ukraine (AP) — Russia unleashed a lethal barrage of strikes against multiple Ukrainian cities Monday, smashing civilian targets including downtown Kyiv where at least six people were killed amid burnt-out cars and shattered buildings. The onslaught brought back into focus the grim reality of war after months of easing tensions in the capital.

Ukraine's Emergency Service said a total of at least 11 people were killed and 64 were wounded in the morning attacks across Ukraine — the biggest and broadest since the early days of the war.

Russian President Vladimir Putin, whose military invaded...