Ukraine using drones to 'great effect' on Russian forces: Pentagon updates

But Russia is flying 20 times as many plane sorties as Ukraine.

The Pentagon has been providing daily updates on the Russian invasion of Ukraine and Ukraine's efforts to resist.

Here are highlights of what a senior U.S. defense official told reporters on Friday:

Russia flying 20 times as many sorties as Ukraine

Russian military planes are flying an average of 200 sorties per day, compared to only about 10 per day flown by Ukraine, according to the official.