more now on the breaking news out of ukraine where a russian attack is underway. russia has launched an attack. this exclusive video shows military vehicles, you can see there, entering ukraine from belarus where russia has been conducting military drills. the belorussian president says his troops are not taking part in the russian operation. to the south, russian troops have been seen entering the country from crimea. while the crisis escalates on the ground, over ukraine the air space remains empty. a move that evac cue waits