The Russia-Ukraine conflict has reached a critical juncture as both sides ramp up their attacks. Ukraine's president has ordered a government reshuffle, while Vladimir Putin claims Ukraine's Russian incursion has failed. Kyiv-based journalist Emmanuelle Chaze tells The World's Yvonne Yong that millions of people have been displaced in Ukraine. Choose your news on the ABC NEWS app and stay in the know: https://ab.co/abcnewsapp | ABC News

The Chernobyl disaster is one of the worst nuclear accidents in history and the area still remains radioactive to this day. Check out what happened immediately after the reactors exploded and how some brave men went into the warzone to try and save everyone from an even greater nuclear disaster. | The Infographics Show