The belarusian air force probably came from the plane Mikoyan-Gurevich MiG-29, the incident occurred on airport Bobrujsk, Mogilevský region. It should be nacvičováno leaving the airport, shortly before take-off there was a fire at least one engine, the pilot had to pull the chassis (and thus to stop the aircraft quickly enough), and thereafter to eject.
Sources:
aviation-safety.net
https://news.tut.by/accidents/532815.html.
Sources:
aviation-safety.net
https://news.tut.by/accidents/532815.html.