Initiated in 1983 as part of a next-generation fighter program, the Berkut is distinguished by its unique forward-swept wing design. This configuration offers several aerodynamic advantages, such as improved lift at subsonic speeds and enhanced maneuverability at high angles of attack. These wings allow for greater aerodynamic efficiency during maneuvers, particularly at low speeds. The aircraft can achieve high angles of attack reportedly up to 120 degree, enabling complex aerial maneuvers like the "Pugachev's Cobra".