Cuba’s electricity grid collapsed late on Sunday, the state-owned grid ​operator said, plunging the island of ‌about 10 million people into darkness as blackouts become more frequent. The outage follows three nationwide blackouts in ​July and comes as a U.S.-imposed ​oil blockade further strains the island’s ageing ⁠energy infrastructure.

A top Cuban official says the island won’t negotiate its politics, but it is willing to talk investment, including from President Trump.

Marco Rubio warns that Cuba is an espionage superpower. Rubio says Cuba has successfully infiltrated the U.S. government with spies, posing a major threat.

President Trump has tried to strangle Cuba by blocking its oil imports. But six months later, the island is finding ways to endure.