Washington (CNN) President Donald Trump on Monday urged Venezuelan military officials to back the country's self-declared interim president Juan Guaido and allow humanitarian aid to flow into Venezuela.

Speaking in Miami as humanitarian aid remained stalled at the Venezuelan border, Trump decried President Nicolas Maduro as a "Cuban puppet" and warned officials who have helped keep him in power that "the eyes of the entire world are upon you." The speech was Trump's latest effort to ramp up the public pressure on the Venezuelan autocrat following a series of US-led sanctions and diplomatic maneuvers aimed at ousting Maduro.

"Two days ago the first US Air Force C-17 landed in Colombia loaded with crucial assistance, including thousands of nutrition kits for little Venezuelan children," Trump said. "Unfortunately dictator Maduro has blocked this life-saving aid from entering the country. He would rather see his people starve than give them aid."

"Maduro is not a Venezuelan patriot, he is a Cuban puppet," Trump added.

Speaking directly to Venezuelan military officials, Trump urged them to allow the humanitarian aid to flow freely into the hunger-stricken country.

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