Ukraine and Russia: What you need to know right now

(Reuters) - Ukraine has defied Russia's demand for soldiers to lay down arms in Mariupol, where civilians are besieged in a city being laid to waste by bombardment.

Russia's almost month-old assault on Ukraine has stalled along most fronts, failing to seize any major city or topple the government. But shelling and missiles are causing devastation.

FIGHTING

* In the capital Kyiv, shells hit a shopping centre on Sunday evening, killing at least eight people.

* Russian artillery continues to pound the eastern cities of Kharkhiv, Sumy and Chernihiv.

* But the focal point is Mariupol, a strategically important southern port. There, horror and bewilderment stalk the devastated, Russian-besieged city, where some bury neighbours in roadside graves.

REFUGEES

* Nearly 6.5 million people have been uprooted from homes, the United Nations says. Just over 8,000 people were evacuated on Monday.

SANCTIONS

* The European Union cannot agree on whether or how to slap sanctions on Russia's lucrative energy sector. Germany says the bloc is too dependent on Russian oil for that.

DIPLOMACY

* Peace talks resumed but there is no sign of significant progress.

* U.S.-Russia bilateral ties were on the brink of collapse, Russia's foreign ministry said, summoning the U.S. ambassador after President Joe Biden called Russian President Vladimir Putin a "war criminal."

COMING UP

* The U.N. General Assembly is expected to vote again this week on a motion criticising Russia for the humanitarian crisis in Ukraine.

QUOTES

* "It is a senseless massacre where every day slaughters and atrocities are being repeated," Pope Francis said.

* "Everything is destroyed. Where can we go?" asked librarian Irina Chernenko in a dark cellar in Mariupol packed with families for 11 days.

(Compiled by Andrew Cawthorne and Rosalba O'Brien)

People attend a shooting training as Russia
People attend a shooting training as Russia's attack on Ukraine continues, in Ivano-Frankivsk, Ukraine March 21, 2022. REUTERS/Yuriy Rylchuk

A view shows an apartment building destroyed during an air raid, amid Russia
A view shows an apartment building destroyed during an air raid, amid Russia's invasion of Ukraine, in Kyiv, Ukraine March 21, 2022. REUTERS/Serhii Nuzhnenko

Volunteers produce armoured vests and backpacks for Ukrainian service members, as Russia?s attack on Ukraine continues, in Zaporizhzhia, Ukraine March 21, 2022.  REUTERS/Stringer
Volunteers produce armoured vests and backpacks for Ukrainian service members, as Russia?s attack on Ukraine continues, in Zaporizhzhia, Ukraine March 21, 2022. REUTERS/Stringer

A woman cries as her daughter embraces her husband after fleeing from Kharkiv in Ukraine to Romania, following Russia
A woman cries as her daughter embraces her husband after fleeing from Kharkiv in Ukraine to Romania, following Russia's invasion of Ukraine, at the border crossing in Siret, Romania, March 21, 2022. REUTERS/Clodagh Kilcoyne

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