Ukraine in full-scale attack
Ukraine in full-scale attack, Russian forces launch a full-scale assault on the whole of Ukraine with its military attacking the country from the north, east and south
Thousands of people have been trying to flee and seek safety in neighbouring countries
Ukraine vows to fight back
Ukraine vows to fight back, and its president warns this could be the start of a major European war
Port city of Mariupol under attack
Ukraine’s port city of Mariupol is under heavy fire with reports of hundreds of explosions, a diplomatic source has told Reuters news agency.
Taking Mariupol would help Russia secure a direct land route to Crimea, the Ukrainian peninsula annexed by Russia in 2014.
There is fierce fighting around the site of the former nuclear power plant in Chernobyl.