Why is the US military building up presence in the Caribbean?

Tensions between the United States and Venezuela came to a head this week. That's after Washington took the unprecedented decision of bombing a boat near the Venezuelan coast. The Trump administration said the vessel was loaded with drugs and gang members and posed a threat to the US. Venezuela's president denies the charges and says his country is ready to defend itself. So, what's behind this action by the US? Is it about narcotics or politics?Become a supporter of this podcast: https://www.spreaker.com/podcast/the-truth--6487495/support.