Estos cuatro bombarderos son las joyas de la corona de la Fuerza Aérea de Rusia
https://nationalinterest.org/blog/buzz/these-four-bombers-are-crown-jewels-russias-air-force-90876
https://nationalinterest.org/blog/buzz/these-four-bombers-are-crown-jewels-russias-air-force-90876