Sky News' Security and Defence Analyst Michael Clarke explains how a key bridge linking Russia to Crimea has been hit by a huge explosion.

Sky's Alex Crawford reports from Yampil in Donetsk where the Russians are in retreat and are being hunted down by Ukrainian forces.#ukraine #russia SUBSCRIBE...

Military analyst Forbes McKenzie looks at the latest Ukrainian advances around Kherson in the south of the country. He also asks whether reports of a nuclear train in Russia are accurate.