Donald Trump has promised to ‘fix’ Venezuela’s ‘broken’ oil industry – but with analysts estimating that could take up to 14 years and billions of dollars, what is in it for the US president?

The US might aim to unlock the country’s reserves, but cost and political uncertainty make it look an uncertain option

“I don't think any large U.S. major company is going to want to invest without a series of guarantees,” one historian of Venezuela said.