President Donald Trump's policy of attacks on vessels he says are linked to the drug trade and the regime of Venezuelan President Nicolas Maduro could lead to the U.S. leader ordering air strikes on narcotics sites in the South American country, an analyst has told Newsweek .

President Trump says the U.S. has struck another small boat he accuses of carrying drugs in the waters off Venezuela.

Six sources tell NBC News that members of Congress are growing increasingly concerned over a lack of information from the Trump administration about the attacks on alleged drug smuggling boats. NBC News' Courtney Kube reports on the strikes as well as the Pentagon's updated press policy.