I’ll go with the 30 year mark. Countries like Russia or China don’t get humbled in a loss (like Germany didn’t in WW1). Russia will negotiate some terms for Ukraine (or maintain perpetual war), but I believe it will become a military state that will funnel all money into the defense sector. The same with Iran, and the same with China.

Iran supplies Russia with drones. I can promise you Russia will help Iran enrich their uranium. They are both pariah states, what do they have to lose? Nuclear Iran, here enters Israel.

Everyone’s arming up, there’s a gun fight coming.