Elbrus chips were manufactured in Taiwan TSMC before the war and it has been stopped now due to the war, Russia has no domestic capability to manufacture them.
The process is not as advanced as the TSMC's one, but they seem to have progressed (or have been progressing?) to 28-45 nm technological process in 2018.
Probably possible to order one of these using automotive process in some foundry in Asia. Nobody will ask too much and it would be enough power for defense applications.
