Martial Law declared in Ukraine
Ukrainian President Volodymyr Zelensky has introduced martial law, and urged people to remain calm in a brief video address on Thursday morning.
It comes after Russian President Vladimir Putin announced a "military operation" in Ukraine's Donbas region, urging Ukrainian soldiers in eastern Ukraine to lay down weapons and return to their homes.
Ukraine’s Foreign Minister has accused Russia of starting a full-scale war and is urging the UN "to do everything possible" to stop it.
We’ll bring you the latest from Ukraine and reaction from the international community.