President Petro O. Poroshenko of Ukraine on Monday denounced calls for “federalization” of the country, which Russia has endorsed as a way of granting political autonomy to the areas of eastern Ukraine controlled by pro-Russian separatists. Establishing greater local autonomy and governmental authority is widely viewed as crucial to settling the nearly yearlong war in the eastern regions of Donetsk and Luhansk, and it was a central plank in a cease-fire accord signed in February. But there are fierce disagreements over how to shape those powers, and how far they would extend. Speaking at the first meeting of a commission charged with developing amendments to the Ukrainian Constitution, Mr. Poroshenko described federalization as tantamount to breaking apart the country, and said […]