President Donald Trump, who has said the operation against Venezuelan President Nicolas Maduro should serve as a warning to the rest of the world, doubled down on his threats, implying that Colombian President Gustavo Petro could face U.S. action soon.

“Colombia is very sick too, run by a sick man who likes making cocaine and selling it to the United States. And he’s not going to be doing it very long. Let me tell you,” Trump claimed while speaking to reporters on Sunday.

Earlier on Sunday, Petro released a statement on the operation and Trump’s previous comments about him, saying, “I deeply reject Trump speaking without knowing; my name does not appear in the judicial files on drug trafficking over 50 years, neither from before nor from the present.”

“Stop slandering me, Mr Trump. That’s not how you threaten a Latin American president who emerged from the armed struggle and then from the people’s struggle for Peace in Colombia,” he added.

Reporters asked Trump if the U.S. has a similar plan to deal with Cuba as they did for Venezuela, to which he said that Cuba only survived because of Venezuela.

“Now, they won’t have that money coming in. They won’t have the income coming in. You know, a lot of Cubans were killed yesterday, you know that a lot of Cubans were killed,” Trump said.

Trump said those Cubans were trying to protect Maduro. Later, the president said that Cuba is “ready to fall.”