No. Not at all. There will come a point when Russia will stop the war because either Russia is completely exhausted and on the verge of collapse, or Putin is dead or removed from power. And chances are those two will go together.
Depends on who does the removing. It could go a lot of different ways, but even if it's someone from his own government who is hostile to the west, they're still likely to use it as an excuse to end the war.
