US President Donald Trump this week issued an executive order to block the property and interests of the Venezuelan government in the US, further ratcheting up pressure on the already embattled regime of Nicolas Maduro and adding to previously imposed sanctions.

The White House said the move will restrict entry into the US of people who are sanctioned or seek to undermine the government of self-declared leader Juan Guaido, who has drawn widespread backing from international governments but failed to dislodge Maduro's hold on power.