HAVANA — Cuba’s foreign minister has rejected President Donald Trump’s new policy toward the island, saying “we will never negotiate under pressure or under threat” and refusing to return U.S. fugitives who have received asylum in Cuba.

In a hard-edged response to the policy announced Friday, Foreign Minister Bruno Rodriguez said from Vienna Monday that Trump’s restrictions on transactions with the Cuban military would not achieve their objective of weakening the government. He said they would instead create unity behind the communist leadership.

He described fugitives such as Joanne Chesimard, a black militant convicted of the murder of a New Jersey state trooper, as political refugees who had received asylum from the Cuban government and would not be returned because the U.S. has no “legal or moral basis” to demand their return.