30,000 troops.
And?
The Russians - according to their own reports - were under the impression they would be welcomed as liberators and would face little opposition. The whole invasion force was under 200,000 men.
No one planning a “feint” attack on Kiev would waste hundreds and hundreds of special forces troops on an airport they would do exactly nothing with.
Going 40 miles an hour it takes you 6 hours to get from the Russian border to Kiev. The Russians probably thought they would be in the city in a couple of days.
The latest successes of the Ukrainians just shows that the Russians are just poorly prepared for this war. I say that knowing full well that time may be on the side of the Russians for they have more men and resources in the long run.