Russia unleashes a heavy bombing campaign. Cities are reduced to rubble. Thousands of civilians are killed. Russia did that twice in Chechnya in the 1990s. Is a repeat likely in Ukraine today?
The Ukrainian Embassy in Turkey said that a group of 86 Turkish nationals, including 34 children, were among the people who had sought safety in the mosque.
As millions of refugees flee Ukraine, Silva Alkebeh spends her time thinking about how to get aid across the border and into the heart of the most besieged cities.
NPR's Ari Shapiro and Tim Mak look at humanitarian efforts in Poland and Ukraine, which involve major international organizations and small grass-roots groups to bring supplies into Ukraine.
Russia's top prosecutor called for Facebook and Instagram's parent company to be labeled an extremist group after Meta said it would permit some calls for violence against "Russian invaders."
Wojciech Bakun admits he was ill-prepared to become a front-line humanitarian worker dealing with the rush of refugees from Ukraine. And some onlookers have been surprised by his response too.
The UN now says more than 2.5 million people have fled Ukraine, most of them to Poland. NPR's Ari Shapiro reports on the busiest and one of the most quiet border crossings in Poland.