Ukrainian drones fly to Russia.
They pass through Russian air defense.
They do not use Estonian airspace.
Some drones enter Estonian airspace due to errors.
Karu does not know the exact numbers.
Ukraine keeps its attacks secret.
Russian air defense is strong at the border and near cities.
But the country is large, and air defense is not everywhere.
Ukrainian drones cover long distances.
They are manufactured in Ukraine.
Ukrainian and Russian drones are similar.
The difference is in targeting.
Ukraine is more innovative in aerial warfare.
Russia lacks innovation.
The frontline has been static recently.
Ukrainians carry out sudden attacks, but there is no major change.
Starlink disrupts Russian communications.
At the beginning of summer, Ukraine has the advantage.