Vladimir Putin has sent a chilling reminder of Russia's nuclear capabilities by unveiling the world's largest supersonic bomber.
Nicknamed 'the White Swan', the Tupolev Tu-160 aircraft underwent a series of tests on its maiden flight on Monday while equipped with "Dagger" missiles.
The strategic bomber can carry KH-47M2 Kinzhal missiles – known as “dagger” or “killjoy” because of their hypersonic nuclear capabilities.