Trump made peace with the Taliban, stopped fighting with them directly, pulled out U.S. forces, leaving behind a rump force, and agreed to fully pull out during the next term, which ended up being Biden’s term, leaving Biden the choice of reneging on Trump’s deal and restarting the war directly with the Taliban which would require more troops, or pull out.
Hitler stole land with the threat of military force and with military force, Europe allowed it hoping Hitler would be satisfied. This history is reminiscent of Putin’s actions.