Here are the top 10 updates on this big story
US President Joe Biden called the conflict in Ukraine a "strategic failure" for Russia but said ordinary Russians were "not our enemy". He also warned Russia not to move on an "inch" of NATO territory.
The United States has no strategy of regime change for Russia, Secretary of State Antony Blinken said on Sunday after President Joe Biden said Russian President Vladimir Putin "cannot remain in power".
Ukraine and Russia have agreed to two 'humanitarian corridors' to evacuate civilians from frontline areas on Sunday, including allowing people to leave by private car from the southern city of Mariupol, Deputy Prime Minister Iryna Vereshchuk said.
Russian forces struck military targets in the western Ukrainian city of Lviv with high-precision cruise missiles
Ukrainian President Volodymyr Zelensky demanded Western nations provide a fraction of the military hardware in their stock piles and asked whether they were afraid of Moscow.
Ukrainian Interior Ministry adviser Vadym Denysenko said that Russia has started destroying Ukrainian fuel and food storage depots, meaning the government will have to disperse the stocks of both in the near future
The United States intends to provide Ukraine with an additional $100 million in civilian security assistance. US Secretary of State Antony Blinken said in a statement that the assistance would be to build the capacity of the Ukrainian ministry of internal affairs.
British Foreign Secretary Liz Truss said that UK sanctions against Russia over its invasion of Ukraine could be lifted if Moscow committed to a full ceasefire and withdrew its troops.
The UN refugee agency, UNHCR, said 3,772,599 Ukrainians have fled the country since Russia's invasion a month ago.
Two rocket strikes hit Ukraine's western city of Lviv on Saturday, wounding five people, regional Governor Maksym Kozytskyy said, after local authorities told residents to seek shelter in the wake of powerful blasts on the city's outskirts.
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