Iuliia Mendel, the president's former press secretary, says Ukraine has 'had some successes' in defending itself, urges no-fly zone, laments sanctions to date are inadequate

Moscow accuses Kyiv of having 'rejected' talks to negotiate a solution to conflict, as Ukraine's army says it is holding back an assault on the capital

In phone call, Zelensky asks Turkish leader Erdogan to close off Black Sea to Russian warships, but Ankara says it has made no decision on the matter

Ukrainian leader urges Russian citizens to pressure leader Putin to stop invasion, amid reports of fierce national resistance to attack

Ukrainian president finds himself at center of Europe’s most significant conflict since World War II

Top advisor to Ukrainian president says military successfully holding off Russian assaults; apartment block in capital hit by Russian shelling

'The fight is here,' president tells US officials from secret whereabouts; street fighting against Russian forces underway in Kyiv, officials say

'This night will be more difficult than the day,' Ukraine president tells his people in a video adress after midnight, adding that several cities are under attack

Warning comes after Ukrainian president says he and his family are Moscow's main targets as Russian forces close in on Kyiv

'We're all here defending our independence, our country, and it will stay this way,' leader says in defiant video from bombed capital