Cuba’s authoritarian regime has failed to avert an economic crisis, repair decaying state institutions, and prevent the country’s largest outflow of migrants since the 1960s.

The Putin regime remains strong, but nationwide protests in support of Alexei Navalny are the most serious challenge to it in years.

Political unrest is sweeping Chile, as impatience with inequality grows in what has been one of Latin America’s most prosperous and stable countries.