It seemed at the time when korolev cross happened, something blew up to many pieces...
YouTube feed has dropped out.
Looks like the same scenario as the Soyuz-18A launch abort in April 1975. Back then the crew landed in an inhospitable mountaineous area just north of the Chinese border.https://en.wikipedia.org/wiki/Soyuz_7K-T_No.39
This was a much higher energy abort (beyond third stage ignition)