An exiled Nicaraguan journalist says she fears a growing presence of Russsian troops in her homeland as the country grows increasingly isolated on the world stage. Berta Valle — wife of imprisoned Nicaraguan opposition leader and presidential candidate Felix Maradiaga — told The Post on Monday that Nicaraguans are “terrified” of dictator Daniel Ortega’s decision to welcome Russian soldiers to the Central American country after seeing what they’ve done in Ukraine. “Ortega invited the Russian military into Nicaragua. Publicly, he says Russia is supporting the military training of the Nicaraguan military. But we are terrified, because our country is hosting...