It's a version of the Tupolev Tu-135 strategic bomber project, the "flying wing" project of 1960 :
-Span : 34,8 m
-Length : 50,7 m
-wing area : 417 m²
-max weight : 175 to 205 tons
-powerplant : 4 x 19 600 kn with reheat
-max speed : 3 000 km/h
-armament : 1 x cruise missile or various other stores
-other Tu-135 projects had a range from 7 850 to 8 300 km at 22 500 m
(source : Soviet secret projects : bombers since 1945 (Buttler/Gordon); p.134, 135, 136 and 143)