Donald Trump warned Cuba to “make a deal” or face unspecified consequences, declaring that no more Venezuelan oil or money would flow to the island following the U.S. capture of Nicolás Maduro.

The president claimed the raid killed many Cuban and Venezuelan security personnel, leaving Cuba vulnerable amid its economic crisis.

Cuban President Miguel Diaz-Canel vowed to defend the nation, calling it sovereign and ready to resist any attack.

Trump’s comments drew praise from some Republican lawmakers, while the U.S. is negotiating a $2 billion Venezuelan oil deal under Treasury supervision, The Guardian has reported.

The U.S. also issued a travel alert urging citizens to leave Venezuela amid concerns about armed paramilitaries targeting Americans, though Venezuelan officials dismissed the warning as false.