The U.S. deployed three Navy missile destroyers and around 4,000 military personnel to the waters off Venezuela in effort to thwart cartels.

Venezuelan President Nicolás Maduro announced on Monday the deployment of 4.5 million militiamen throughout the country after the United States doubled the reward for information leading to his arrest and increased the number of troops sailing around Latin America and the Caribbean.

The United States is deploying three guided-missile destroyers to the waters off Venezuela as part of President Donald Trump’s effort to combat threats from Latin American drug cartels.