"It is a cutting-edge weapon capable of overcoming air and missile defenses. It is invincible, having serious combat might and potential," said Mr. Borisov, confirming the weapon's deployment.
Earlier this month deputy Russian Defense Minister Yuri Borisov, was quoted as saying, "We are buying Su-57 jets for combat trials. The first stage of state trials has been concluded. ... As you might imagine ... many test flights must be carried out."