Russia shifts focus to try to grind Ukraine’s army in east

With its aspirations for a quick victory dashed by a stiff Ukrainian resistance, Russia has increasingly focused on grinding down Ukraine’s military in the east in the hope of forcing Kyiv into surrendering part of the country’s territory to possibly end the war.

The bulk of the Ukrainian army is concentrated in eastern Ukraine, where it has been locked up in fighting with Moscow-backed separatists in a nearly eight-year conflict. If Russia succeeds in encircling and destroying the Ukrainian forces in the country’s industrial heartland called Donbas, it could try...