KYIV, Ukraine -- Ukraine struck the headquarters of Russia’s Black Sea Fleet in a missile attack Friday that left a serviceman missing and the main building smoldering, according to military officials on both sides of the war and images from the scene in Crimea.

Ukraine has relentlessly targeted the Black Sea Fleet based in occupied Crimea in recent days.  But Western intel says Russia may be more worried about recent explosions at a Moscow-area airbase. Several military aircraft were blown up at the Chkalovsky base earlier this week,