Island country only has oil enough to last 15-20 days, and 12-hour blackouts have become commonplace

Mexico’s president, Claudia Sheinbaum, has warned that Donald Trump’s move to slap new tariffs on countries sending oil to Cuba could trigger a humanitarian crisis on the island, which is already suffering from chronic fuel shortages and regular blackouts.

The US president signed an executive order on Thursday declaring a national emergency and laying the groundwork for such tariffs, ratcheting up the pressure to topple the communist government in Havana.