Gunshots, explosions rock streets of Ukraine capital Ukraine officials are asking residents to seek shelter. Becky Kellogg, Wochit Feb.

KYIV, Ukraine (AP) -- More than a dozen senior European officials arrived in the Ukrainian capital on Tuesday in a show of support on the fourth anniversary of Russia's all-out invasion of Ukraine -- a grim anniversary in a war that has killed tens of thousands of people and put European leaders on edge about the scale of Moscow's ambitions on the continent.