Ukraine invasion: What to know as Russian forces target Kyiv

Invading Russian forces are closing in on Ukraine’s capital

VIENNA -- After a barrage of airstrikes on cities and military bases around the country, Russian forces were closing in on Ukraine's capital of Kyiv on Saturday. City officials warned of street fighting, and residents were preparing for a third night of assaults.

Here are the things to know about the Russian invasion of Ukraine and the security crisis in Eastern Europe:

WHAT IS GOING ON IN UKRAINE'S CAPITAL?

Central Kyiv appeared quiet Saturday, though sporadic gunfire could be heard. Ukrainian officials reported some success in fending off Russian assaults, but fighting persisted near the capital. Skirmishes reported on the edge of the city suggested that small Russian units were trying to clear a path for the main forces.