KYIV — Russia’s annexation of four Ukrainian regions, announced by President Vladimir Putin on Friday, will not affect Kyiv’s resolve to free them with military force, said an adviser to Ukrainian President Volodymyr Zelenskyy. “For our plans, [Russia’s annexation] doesn’t matter,” Mykhailo Podolyak told POLITICO, speaking before the signing ceremony in Moscow orchestrated by Putin. The Russian leader railed at the United States and the West, denounced the Ukrainian government, and warned: “We will protect our land using all our forces.” The annexation comes on a day when Ukrainian soldiers have reportedly encircled thousands of Russian troops near the city...