Russia’s military pushed deeper into Ukraine on Thursday, attacking strategic airfields and advancing toward major cities as President Vladimir Putin defied mounting sanctions and recriminations from the West. Explosions continued to rock areas around the eastern city of Kharkiv and the capital, Kyiv, sending residents to shelter in subway stations and prompting others to flee the country. U.S. officials said the expanding offensive may be aimed at toppling Ukraine’s elected government and installing a pro-Kremlin regime. Read more: https://wapo.st/353qn3Q. Subscribe to The Washington Post on YouTube: https://wapo.st/2QOdcqK Follow us: Twitter: https://twitter.com/washingtonpost Instagram: https://www.instagram.com/washingtonpost/ Facebook: https://www.facebook.com/washingtonpost/