The United States is launching an operation involving three Aegis guided-missile destroyers in the waters near Venezuela as part of President Donald Trump's strategy to counteract threats posed by Latin American drug cartels, according to a U.S. official acquainted with the plans.

The USS Gravely, the USS Jason Dunham, and the USS Sampson are anticipated to reach their destination soon, noted the official, who wished to remain anonymous due to lack of authorization to speak about the matter publicly.

A representative from the Defense Department confirmed that military resources have been allocated to the area in the effort to combat narcotics traffic. This official, who similarly lacked authorization to discuss military strategies, mentioned that the ships would be stationed "over several months."

In February, Trump's administration classified Venezuela's Tren de Aragua, MS-13 from El Salvador, and six other organizations in Mexico as foreign terrorist groups. His administration, led by Republicans, has also ramped up immigration enforcement against suspected gang affiliates.

But the Trump administration argues the international connections and operations of the groups â€" including drug trafficking, migrant smuggling and violent pushes to extend their territory â€" warrant the designation.

But without mentioning the ships, Foreign Minister Yvan Gil in a statement characterised the U.S. government's drug-trafficking accusations against Venezuela.

“Washington’s accusing Venezuela of drug trafficking reveals its lack of credibility and the failure of its policies in the region,” Gil said.

"Every aggressive statement confirms the inability of imperialism to subdue a free and sovereign people.”

Maduro said the U.S. had increased its threats against Venezuela and announced the planned deployment of more than 4.5 million militia members around the country.