Katie Silver

And with all the frog chat in mind, this is what caught our attention this week. In another case, an American federal judge has ruled to reinstate a Harvard researcher's visa. Xenia Petrova was detained at Boston airport and accused of smuggling frog embryo samples into the country.

Speaking to NBC News, Miguel Diaz-Canel said as a revolutionary, stepping down is not part of his vocabulary and that it's the Cuban people that he responds to.

President Trump has indicated the U.S.

will likely move to take over Cuba and it's been reported that Canel's departure would be a key part of that.

The Caribbean island has been brought to the brink in recent months after the U.S.

led a fuel blockade.

threatening tariffs on any countries that supplied it with oil.

The blockade has led to significant power blackouts as well as shortages of food and medical supplies.

For NPR News, I'm Katie Silver.

The state-owned Union Electrica said Cuba's grid had a, quote, total disconnection on Saturday.

It also happened this past Monday and earlier this month.

The Caribbean island's infrastructure has been crippled after Donald Trump cut off Venezuelan oil shipments to Cuba and threatened tariffs on any country that it provides fuel.

Reports suggest multiple tankers carrying Russian fuel...

en route to Cuba, the first due to arrive Monday.

Mexico has also indicated it is trying to find ways to resume selling oil to Cuba after stopping earlier this year due to US pressure.

For NPR News, I'm Katie Silver in Mexico City.

This is NPR News.

The state-owned Union Electrica said Cuba's grid had a, quote, total disconnection on Saturday.

It also happened this past Monday and earlier this month.

The Caribbean island's infrastructure has been crippled after Donald Trump cut off Venezuelan oil shipments to Cuba and threatened tariffs on any country that it provides fuel.