I bet the Russians/ex-soviets kick themselves in their asses every day for letting that former Soviet physicist publish his book on stealth aircraft on the open market. Of course he has a very lucrative job offer from Lockheed Martin when that placed collapsed...
Petr Ufimtsev had other reasons for leaving the USSR and working for Lockheed:
“At the age of 3 his father was repressed by the regime and later died in a forced-labor camp (GULAG system)”
Lotta people in the Soviet defense forces and the current Russian Federation forces have a past like that. The Communists are always low life gangsters who lock up anyone with an ounce of brains or initiative.