KYIV, Ukraine — From afar, the war in Ukraine can look like a bloody stalemate with no winners and no choice but a negotiated solution. The Ukrainians’ confidence that they can expel the Russian invaders from all of their soil, even Crimea (occupied by the Russians since 2014), can seem delusional. The same Washington eminences who expected last year that Kyiv would fall within 72 hours now warn that Ukrainians might have to settle for a “frozen” conflict that will leave Moscow’s war criminals in control of one-fifth of their land.