Top official warns this increases risk to civilians, 'will involve reckless and indiscriminate use of firepower'; UN says nearly 6.5 million people displaced inside country

Ukraine's human rights commissioner says rescue work is ongoing after building destroyed in Russian airstrike; Moscow claims troops are fighting on streets in city center

'Mariupol looks like Chernobyl,' says Vika Korotkova, who spent 2 weeks in shelters with husband, daughter; Viktoria Smyrnova makes contact after two weeks without internet

Refugees from besieged city say Russians are strangling the life out of it, with corpses lying outside for days and freezing residents forced to melt snow for water

Oleksii Reznikov tells bloc's lawmakers that over 400 schools, 110 hospitals and 1,000 residential buildings destroyed since invasion's onset; calls for stepped up military aid

Authorities unable to confirm casualty count at building that served as largest refuge in besieged city, as area remains target of Russian shelling; Ukraine FM blasts 'war crime'

Ukraine rejects proposal for smaller, non-aligned military, says talks must focus on 'security guarantees'; UK, US say Russian forces remain about 10 miles from center of capital

Some 4,000 cars carrying 20,000 people leave besieged city via humanitarian corridor Tuesday; evacuees report disastrous conditions, with no water and bodies in the streets

'It is here that freedom fights against the world of tyranny,' Polish premier says in Kyiv; Russian forces said to take 400 hostages at Mariupol’s main hospital as 20,000 flee city

Moscow, Kyiv hold fresh round of talks as fighting intensifies around Ukrainian capital, where the leaders of Poland, Slovenia and Czech Republic are heading for a solidarity visit