U.S. President Donald Trump on Tuesday stateside ordered a “complete and total” blockade of sanctioned oil tankers moving in and out of Venezuela as tensions ramp up between Washington and the South American country.

In a post on Truth Social, Trump said “Venezuela is completely surrounded by the largest Armada ever assembled in the History of South America.“

He added, “It will only get bigger, and the shock to them will be like nothing they have ever seen before — Until such time as they return to the United States of America all of the Oil, Land, and other Assets that they previously stole from us.”