When can Putin withdraw from the Ukraine war?

The UK, France and Germany are considering helping Ukraine with tanks to counter the Russian army. According to the countries, Kiev can achieve great success in the battlefield by using this weapon. Moscow may be forced to stop the war and start peace talks. But the question is, will Russian President Vladimir Putin stop the war even after facing great losses? Olga Chizh, assistant professor of political science at the University of Toronto, Canada, wrote an article about this in The Guardian. The article has been abridged and published for the readers of Prothom Alo.