What makes Joe Biden say, 'Putin cannot remain in power'?

 Biden: ‘Putin cannot remain in power’

Look at this photo.  He is the most important man during the ongoing Ukraine conflict.  His name is John Sullivan, and he is the current US Ambassador in Russia. Presumably, through its staff in Moscow, Yekaterinburg, and Vladivostok, and paid informants within the Russian Government, the US is constantly collecting information about the prevailing views in the Russian Government and the military about the Russian war in Ukraine.  What made President Biden, during his Poland visit, say ‘Putin cannot remain in power’?  Has the US received information about a growing dissent within the Russian establishment, or is the Biden’s statement part of a psyop meant to put distrust in the mind of Putin for his close associates who may try to unseat him--and by making Putin distrustful of people around him, alienate him from his confederates to ultimately make the prophecy come true?  With in-person peace talks between Ukraine and Russian officials starting very soon in Istanbul, all of us are anxious to see an end to the war and peaceful times to return.

Photo, courtesy of the US Embassy in Moscow

3/28/22; It turned out Joe was just being senile; the State Department says Biden was saying things off-script.  The US has no plan for Putin to be or not to be in power.