Fierce resistance by Ukrainian forces and armed civilians has thwarted at least one attempt by Russian troops to advance into Kharkiv, Ukraine’s second largest city. CNN’s Alex Marquardt has more. #CNN #News

How CNN verifies social media videos from Ukraine
https://www.cnn.com/videos/world/2022/03/01/ukraine-russia-social-media-video-verify-geolocation-orig-llr.cnn