By Dave Sherwood and Ayose Naranjo HAVANA, July 7 (Reuters) - Cuba said it had reconnected most of the country to the national grid by late on Tuesday, though millions remained without power as the island nation struggles to generate even one-third of current demand during an ongoing U.

Fighting U.S. sanctions is Cuba’s top diplomatic priority, and the government spends much time and resources on the issue at the United Nations.

The Trump administration’s military strike in January against Cuba’s former ally Venezuela cut off a crucial supply of oil to the island. It was soon followed by a US-ordered oil blockade on the island,

Cuba is dealing with another national blackout Monday, its third since the beginning of the year, the country's state energy company said.

Cuba suffered another islandwide blackout Monday as its struggling power grid collapsed, leaving millions without electricity while officials worked to restore service.

Diplomatic tensions between Washington and Havana have widened in recent months.

The most important things Raúl Guillermo Rodríguez Castro said about dealing with Trump and the United States in an exclusive USA TODAY interview.

There is now an energy siege, which is equivalent to a naval blockade, which is an act of war,’ says Foreign Minister Bruno Rodriguez Parrilla | Anadolu