Several days after Ukraine said nine planes were destroyed at a Russian air base in Crimea, nobody has publicly claimed responsibility for it — but speculation abounds.

Satellite images and social media analyzed by NPR show attacks have hit structures around the plant, coming dangerously close to causing a nuclear disaster.

Ukrainian and international experts and commentators have responded critically to an Amnesty International report implicating Ukrainian troops in potential war crimes.

A report says Ukraine placed its forces near noncombatants, putting them in danger. Government officials say they evacuate civilians from combat areas, and that the report depicts "a false reality."

Amnesty International has criticized Ukraine for setting up military bases in residential areas. Ukrainian officials say It's Russian forces that are putting Ukrainian civilians lives in jeopardy.

The U.S. Embassy in Ukraine has been through a lot in recent years. It's just reopened and Ambassador Bridget Brink is overseeing a massive U.S. assistance operation with a limited staff.

Ukraine says it urgently needs the heavy artillery to counter Russia on the battlefield. Also, President Zelenskyy is looking for additional support as the leaders of Germany, France and Italy visit.

Ukraine's National Opera was built to celebrate Russian opera at the height of the imperial era. Performances were suspended after the war began but have recently re-started.

First came the battle for Bucha. Now there's the battle to rebuild Bucha. This town was a scene of devastation in the early days of the war. Today you hear pounding hammers and screeching buzzsaws.

Followers of the Russian Orthodox Church in Ukraine broke with its Moscow leadership. The Russian patriarch has supported the war and called opponents "forces of evil."

The widow asked the Russian soldier what he felt when he killed her husband. "Fear," he said. "I understand you probably won't be able to forgive me. But I ask for your forgiveness."

This year, the Vatican proposed having Ukrainian and Russian families carry the cross together during the annual Good Friday ceremony in Rome. Then Ukrainians objected.

Ukrainian Americans, like most Americans, are divided over what to make of that July phone call between President Trump and Ukraine's president, which is part of the impeachment probe against Trump.