Power was restored across Cuba on Friday following a large-scale blackout, but the island's energy crisis remained acute, with oil supplies tapped out. The Caribbean island of 9.6 million people,

Cuba's electrical grid suffered a partial collapse early on Thursday morning, the country's grid operator UNE said, snuffing out power across eastern Cuba and testing the patience of Cubans already exhausted ‌from seemingly interminable blackouts amid a U.