When Russia first invaded Ukraine two weeks ago, the near-unanimous global assumption was that it would score a quick and easy military victory over its neighbor to the west.
But now — with the Ukrainians waging a fierce resistance and Russian forces bogged down outside nearly every major city — the Biden administration and its allies say they see no clear end to the military phase of this conflict, according to interviews with 17 administration officials, diplomats, policymakers and experts. The situation seems destined to result in an even deadlier and…
