Mr Guaidó declared himself interim president last year, arguing that Mr Maduro’s 2018 re-election was illegitimate. His position at the head of the opposition-led National Assembly was the basis of his claim to be Venezuela’s legitimate head of state.
He is recognised as such by more than 50 countries, including the US, the UK and most in Latin America and the EU
Speaking on Monday, Mr Maduro said the EU “recognises a puppet as president”.
Some four million people have fled Venezuela since 2015, according to the United Nations, amid a severe years-long political and economic crisis. The oil-rich country suffers from high unemployment and shortages of food and medicine, and hundreds of thousands of people are said to be in need of humanitarian aid.