Venezuelan President Nicolás Maduro has said he cannot rule out the possibility of civil war as pressure mounts on him to stand down.
In a TV interview, he warned that US President Donald Trump would leave the White House "stained with blood" if he intervened in the crisis.
He also defiantly rejected the EU's Sunday deadline to call snap elections.
Opposition leader Juan Guaidó declared himself interim president last month and won US backing.
He said on Sunday he would build an international coalition to deliver humanitarian aid to Venezuelans but Mr Maduro has accused him of organising a coup.
This comes at the time when more countries are recognizing recognize opposition leader Juan Guaido as Venezuela's acting president.
Spain, UK and France are the latest countries joining USA recognising Guaido as interim president.
