Puerto Rico’s new Republican governor is drawing attention to Venezuelan strongman Nicolás Maduro’s military threats against the U.S. island in the wake of President-elect Trump’s calls for U.S. territorial expansion.

In a letter to Trump dated Monday, Gov. Jenniffer González-Colón said Maduro’s plea for Latin American troops to invade Puerto Rico “is an open threat to the United States, our national security and stability in the region.”

González-Colón’s letter was in response to a Maduro speech on Sunday in Caracas, closing the “Global International Antifascist Festival.”

“As in the north they have an agenda of colonization, we have an agenda of liberation, and that agenda was written for us by Simón Bolívar,” said Maduro.