More than 4,300 people were detained at anti-war protests across Russia as President Vladimir Putin vowed to press ahead with his invasion of Ukraine unless Kyiv surrendered. #RussiaUkraineWar #AntiWarProtests #Ukraine #Russia #News #Reuters #UkraineCrisis #VladimirPutin 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