Russian nuclear bomber flies close to Ukraine border in major war escalation

THIS is the chilling moment one of Vladimir Putin's nuclear bombers was caught flying close to the Ukrainian border in a major military escalation.

The TU-160 strategic bomber was seen in the skies over Western Russia amid huge pressure on the Kremlin over the sinking of the Moskva flagship in the Black Sea. 

Videos today caught four aircraft - one used to carry nuclear bombs - over Kaluga region, between Moscow and the Ukrainian border.