A few nukes in earth penetrating mode spaced around the vicinity of Moscow will render those bunkers creme de la creme crematoria.
Yep.
Those bunkers had better far away and/or be very deep to have a chance.
If they are right under Moscow, and it gets hit with multiple high yield nukes, the seizmic damage may not cause a collapse to the hardened spaces, but it could easily trap them and destroy systems and services. In other words, it’s a massive death trap.