MOSCOW — Paul Manafort’s consulting clients before he joined the Trump campaign in 2016 — the leaders of Ukraine’s pro-Russian government — were overthrown in a popular uprising in 2014. Their problems continued this week. Mr. Manafort’s ... trial was “like a fairy tale where all the secrets are revealed,” Mustafa Nayyem, a former investigative journalist and member of Parliament, said in an interview on Wednesday. On Tuesday, shortly before a jury convicted Mr. Manafort, Ukraine’s prosecutor general, Yuri Lutsenko, opened a criminal investigation into Mr. Manafort’s former sponsors in Ukraine. By paying Mr. Manafort while simultaneously serving in government...