Here are the latest developments from the war in Ukraine.

Russia’s bid to capture the key eastern city of Sievierodonetsk is faltering against a fierce Ukrainian counteroffensive that has reclaimed significant sections of the city.

Ukraine now controls “large” parts of the city, the Washington-based Institute for the Study of War reported, corroborating earlier statements from the governor of Luhansk.

President Volodymyr Zelensky of Ukraine visited eastern frontline positions in the Donbas region on Sunday, including the city of Lysychansk near Sievierodonetsk.

In other developments:

- President Vladimir Putin on Sunday issued a thinly veiled threat that Russia would “strike targets we haven’t hit before” if the West were to continue supplying Ukraine with longer-range missiles.

- NATO and EU nations bordering Serbia closed their airspace to Russia’s foreign minister, Sergei Lavrov, before his scheduled visit on Monday. Read more

@nytimes