.. as Ken alluded to, Finland would be useless for the land war, Ukraine has always been a point of entry for invasions of Russia:

Polish–Russian War (1609–1618)
Conflict between the Polish-Lithuanian Commonwealth and Russia during the Time of Troubles.

Polish–Russian War (1654–1667)
Resulted in significant territorial gains for Russia, including parts of Ukraine.

Swedish Invasion 1655-1660
Concurrent with the Polish–Russian War, where Sweden invaded the Polish-Lithuanian Commonwealth.

Napoleon's Invasion 1812
Napoleon invaded Russia, leading to significant battles but ultimately a retreat due to harsh conditions.

Nevermind Finnish siege of Leningrad (as part of the Axis) and ..

Not forgetting the operation Barbarossa in 1941 by Third Reich.

The west has no chance of stealing Russian resources through land wars.