Russian tanker Anatoly Kolodkin is heading to the Caribbean island, despite Donald Trump’s push to choke Cuba's economy.

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.

Here’s what to know about the energy, economic, and political crises surrounding Cuba—and the role of Trump and the U.S.

On Friday, Cuban President Miguel Díaz-Canel said the country was running on about 40% of the fuel it needs, and that figure is dwindling daily as no fuel is entering the country. The result is that women are giving birth in dark hospitals with no power, and locals say they are used to power lasting just two to five hours daily.

Trump has recently increased pressure on the island nation of Cuba, adding March 17 Washington would be doing "something with Cuba" soon.

A magnitude 5.8 earthquake struck eastern Cuba early Tuesday, hours after the island's national power grid collapsed. No deaths were reported.

Cuba is open to having a fluid commercial relationship with U.S. companies" and "also with Cubans residing in the United States and their descendants," Deputy Prime Minister Oscar Pérez-Oliva Fraga said in an interview in Havana.

DeSantis said even if the state suspends gas taxes, fluctuations in oil prices may erase any potential savings for motorists.

Cuba's grid operator has restored intermittent power after the national electric grid collapsed on 16 March. It comes amid a US-imposed oil blockade that has crippled the island's already struggling fuel, food, and medicine shortages.