How Russia's war galvanized Ukraine and still threatens the world order

Nadia (center) prays at the grave of her son Oleg Kunynets, a Ukrainian military serviceman who was killed in the east of the country, during his funeral in Lviv, Ukraine, on Feb. 7. (Emilio Morenatti/AP)

It has been 12 months since Russia invaded Ukraine, a challenge to the global order not seen since World War II.

In a special report, NPR's Leila Fadel explores the human cost of Russia's ambitions, the ripple effects beyond Ukraine's borders, and the diplomatic and military efforts to stop the war.