Some 74% of Americans – including solid majorities of Republicans and Democrats – said the United States and its allies in the North Atlantic Treaty Organization should impose a no-fly zone in Ukraine, the poll found. An equally bipartisan 80% of Americans said the United States should stop buying Russian oil. The White House on Friday said it was weighing cuts to U.S. imports of Russian oil, though it is proceeding cautiously, concerned about a spike in gasoline prices that would add to high inflation. Moreover, 81% of Americans think Washington should impose additional sanctions on Russia, up from 77%...