President Petro Poroshenko may be the most Moscow-hated Ukrainian politician today. The Russian state-run propaganda machine has been lambasting Mr. Poroshenko for months ahead of the March 31 presidential election, and top officials publicly joined in. According to the secretary of Russia’s Security Council, Nikolai Patrushev, Ukraine is ruled by Americans from Washington who support Mr. Poroshenko because he is their pawn. “If Poroshenko stays in power through massive vote rigging,” Mr. Patrushev insisted last month, “it will be impossible to restore relations with Russia, the crisis in Ukraine will worsen and the country may disintegrate” (Izvestia, March 25).