86% of the Russian public supports Putin's war, so he will not have any political issues for a while, IMHO.
They support it because it is their fight for survival.
They may be exhausted by fighting and lose strength but if they do not fight then NATO will destroy them in the future.
NATO and the Western media are playing a major role in fueling this war. NATO and the United Nations can stop this war if they want but they do not want. The United Nations wants to gradually cripple Russia by creating economic pressure. Russia alone is not responsible for this war
both sides have their shortcomings, but seems that no one wants to give up their respective causes. unless, one of them will lower down their head, this can indeed go for months and months. and the most affected here are their respective people. don't know to what extent can putin sacrifice the future of his people. but if his people will unite to overthrow him, they possibly can.