The Ukrainian air force doesn’t have a lot of Sukhoi Su-25 attack jets left. But the ones it does have are still in the fight as Russia’s wider war on Ukraine grinds toward its fourth year.

Russia’s fleet of Su-35 fighter jets continue to play a leading role in the Kremlin’s Ukraine strategy. Earlier this year, ...

On this day in aviation history, December 25, 1958, a Soviet interceptor made its first flight-the Sukhoi Su-11. Developed by the Sukhoi Design Bureau under Pavel Sukhoi, the Su-11 promised to be ...