Question: The largest and heaviest combat aircraft belongs to what nation?
Sentence (from "Tupolev Tu-160"): The Tupolev Tu-160 "Beliy Lebed" (or White Swan, Russian: Туполев Ту-160 Белый лебедь , NATO reporting name: Blackjack) is a supersonic, variable-sweep wing heavy strategic bomber designed by the Tupolev Design Bureau in the Soviet Union.
Relevant evidence: No