Cuba's national electric grid collapses, leaving millions without power

Cuba's national electric grid collapsed on ​Monday, the country's grid operator said, leaving around 10 million people without power amid a U.S.-imposed oil blockade ‌that has crippled the island's already obsolete generation system.

Grid operator UNE said on social media it is investigating the causes of the blackout, the latest in a series of widespread outages that last for hours or days and that this weekend sparked a rare violent protest in the communist-run ​country.