What action is Trump taking against Venezuela’s oil industry?

The US president wants a blockade of oil tankers under sanctions to stop them entering and leaving Venezuela

• Analysis: Maduro says the real reason for Trump's fixation is oil - is he right?

Donald Trump has intensified pressure on Venezuela's president, Nicolas Maduro, and his government in a major escalation aimed at the country's main source of income: the oil industry.

The White House called for a blockade on all Venezuelan oil exports one week after the US seized an oil tanker off the the country's coast in what Maduro called an act of international piracy".