President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE announced an executive order Monday night expanding sanctions against Venezuela into a full economic embargo.

The executive order signed Monday freezes all assets of President Nicolás Maduro’s government and bars transactions with it without specific exemptions, the first such action against a Western government in decades. The only other countries subject to such sanctions are North Korea, Iran, Syria and Cuba, according to The Wall Street Journal.

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“I have determined that it is necessary to block the property of the Government of Venezuela in light of the continued usurpation of power by the illegitimate Nicolas Maduro regime,” Trump said in a letter to the House of Representatives and Senate that accompanied the executive order.

The letter also cites “the regime's human rights abuses, arbitrary arrest and detention of Venezuelan citizens, curtailment of free press, and ongoing attempts to undermine Interim President Juan Guaido of Venezuela and the democratically-elected Venezuelan National Assembly.”

The U.S. in January formally recognized Guaidó as the nation’s interim leader, followed by more than 50 other nations. However, the opposition has yet to successfully topple Maduro despite U.S. backing. In a leaked recording in June, Secretary of State Mike Pompeo Michael (Mike) Richard PompeoPutin nominated for Nobel Peace Prize The Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Pompeo accused of stumping for Trump ahead of election MORE confessed that keeping the opposition united had been “devilishly difficult.”

“The moment Maduro leaves, everybody’s going to raise their hands and [say], ‘Take me, I’m the next president of Venezuela.’ It would be forty-plus people who believe they’re the rightful heir to Maduro,” Pompeo said in a recording from a closed-door meeting obtained by The Washington Post.