Venezuelan opposition leader Juan Guaidó has vowed at a rally in the capital Caracas to ensure humanitarian aid blocked by President Nicolás Maduro is brought in to the country.
Mr Guaidó said new collection points and routes into the country would allow volunteers to bring the aid in.
Mr Maduro told the BBC he would not allow aid in, claiming it was a means for the US to intervene in Venezuela.
Venezuelans are facing drastic food shortages amid an economic crisis.
“We have almost 300,000 Venezuelans who will die if the aid doesn’t enter. There are almost two million at health risk,” said Mr Guaidó at the rally on Tuesday.
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Mr Guaidó, who has been recognised by the US and most Western governments as interim president of Venezuela, told his supporters in the capital that humanitarian aid would be brought into Venezuela on 23 February.
Envoys for Mr Guaidó met with Brazilian officials this week and announced plans to create a second aid storage hub in the state of Roraima, on Venezuela’s southeastern border.
Mr Guaidó appeared to be relying on volunteers – he called on 250,000 people who signed up online to organise themselves over the weekend, “because we’re going to have to go in caravans”.