good morning to viewers here in the united states and around the world. it is thursday, freebruary 24th. this is cnn s special live coverage of breaking news. ukraine under siege from all sides. russian president vladimir putin unleashing a multi-pronged large-scale military invasion. no city is safe. explosions reported in at least 16 locations in ukraine all over from kyiv, to mariupol, odessa in the south, all the way pest to lviv. we have brand-new images showing damage done by a bombing operation near kyiv. some of kyiv s 3 million citizens, grabbing their belongings, fleeing west in this exodus from the capital. cnn has obtained exclusive video from ukrainian border guards. you can see military vehicles