Venezuelan Leader Nicolás Maduro has broken off relations with the US after it recognised opposition leader Juan Guaidó as interim President.
Mr Maduro gave us diplomats 72 hours to leave the country.
On Wednesday Mr Guaidó declared himself President during mass protests.
The US President, Donald Trump, said “Former President Maduro” no longer had authority and urged the army to back Mr Guaidó instead.
Mr Trump told journalists he was not considering military action but added that “all options are on the table”.
He called on other nations to follow suit in supporting Mr Guaidó.
Seven South American nations, Brazil, Colombia, Chile, Peru, Ecuador, Argentina and Paraguay have recognised Mr Guaidó as the legitimate President.
Canada is also supporting him, while the EU called for new elections.
The Organization of American States (OAS) also recognised Mr Guaidó as President. Venezuela withdrew from organisation in 2017, accusing it of meddling in its internal affairs.
Mexico, Bolivia and Cuba have expressed support for Mr Maduro.