Russian military attacks kill dozens of people in Ukraine

Russian military attacks on Ukraine have killed at least 40 people, an adviser to the Ukrainian president said on Thursday, per AP.

Driving the news: Air raid sirens rang out in the capital Kyiv, as Russian missile strikes were reported in multiple cities across Ukraine — moments after Russian President Vladimir Putin announced a "special military operation" in the country that was part of the Soviet Union until its collapse in 1991.

The big picture: Anton Gerashchenko, an adviser to Ukraine's interior minister, said on Facebook that Russia's military had unleashed missile attacks on Ukrainian military command facilities, air bases and military depots in Kyiv, Kharkiv and Dnipro, according to a translation by AP.