The United States has conducted its 20th strike on an alleged drug trafficking boat, a Pentagon official says.

"The strike (on Monday) occurred in the Caribbean and four narco-terrorists were killed, no survivors," the official said on Thursday.

The official said 79 people have been killed and two were wounded and repatriated to their home countries, while there was one attempted rescue at sea by Mexican authorities as a result of the strikes.

The strikes against suspected drug vessels in the Caribbean and off the Pacific coasts of Latin America have killed dozens of people, who President Donald Trump's administration calls drug-trafficking terrorists responsible for thousands of deaths in the US, without providing evidence.

The US government has not publicly explained the legal justif

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