Ukrainian authorities said missiles struck the western city of Lviv on Monday, killing six, and explosions rocked other cities as Russian forces kept up their bombardments after claiming near full control of the southern port of Mariupol.

Driven back by Ukrainian resistance in the north, the Russian military has refocused its ground offensive in the two eastern provinces known as the Donbas, while launching long-distance strikes at other targets, including the capital, Kyiv.

Capturing Mariupol would be a huge strategic prize for Russia...