Cuba’s government announced Monday it has run out of fuel for commercial aviation, prompting Air Canada to cancel flights to and from the island. The cancellations threaten to further damage Cuba’s economy, which relies heavily on tourism. The fuel shortage comes as the Trump administration has largely shut off energy supplies to Cuba from Venezuela and elsewhere, as Secretary of State Marco Rubio and other high-level officials seek to overthrow the Cuban government.

On Monday, Mexico’s government acknowledged it had suspended oil exports to Cuba, after leaders came under intense pressure from Trump, who threatened new tariffs against any nation that exports fuel to the island. Mexican President Claudia Sheinbaum said she was instead sending hundreds of tons of humanitarian goods to Cuba.

President Claudia Sheinbaum: “This sanction being imposed on countries that sell oil to Cuba is very unjust, very unfair. It’s not right, because sanctions that affect the people are not right. You can agree or disagree with Cuba’s government, but the people should never be affected.”