The United States President Donald Trump has warned Russia asking it to pull its troops from Venezuela.
Trump and Vice President Mike Pence met the wife, Fabiana Rosales, of Venezuelan opposition leader Juan Guaido to express support for her husband in the Oval Office.
They warned Russia to cease support of Maduro.
The opposition leader, Juan Guaido, invoked the constitution to assume the interim presidency.
Two Russian air force planes have landed outside Caracas.
According to reports, 100 Russian troops include special forces and cybersecurity personnel.