Why do you think I can answer that question?
The R-37M is already in use on the MiG-31 in PVO units, it would be no huge surprise for them to get a few extra missiles for Su-35 and Su-57 use against enemy AWACS and JSTARS aircraft.
The R-37M is already in use on the MiG-31 in PVO units, it would be no huge surprise for them to get a few extra missiles for Su-35 and Su-57 use against enemy AWACS and JSTARS aircraft.