President Joe Biden said that Russian President Vladimir Putin "cannot remain in power" in Poland Saturday, remarks a White House official said were meant to prepare the world's democracies for extended conflict over Ukraine, not back regime change in Russia. #JoeBiden #VladimirPutin #Russia #Ukraine #RussiaUkraineWar #Poland #News #Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en