Pompeo called him Venezuela’s most popular politician, and Abrams said Guaido remains the country’s “legitimate interim president” and would probably win elections if they take place some nine to 12 months from now. But he said that for the sake of the transitional government’s legitimacy, Guaido should not be part of it.

“We want Guaido to be free to run for president,” Abrams told reporters. “Under our plan, he is, and according to the polls I’ve seen, he’s very likely to win.”

The US proposal appears to parallel one laid out by Guaido over the weekend to deal with the twin scourges of the coronavirus pandemic and collapsed state income due to the global oil price rout.

Under the proposal, all sides would agree to the creation of a transitional “Council of State” to set up the new elections. The plan won cautious support from Senator Marco Rubio, a Florida Republican, who warned against any move that would “sideline” Guaido or “the legitimately elected National Assembly he leads”.

Venezuela’s Maduro urges all women to have six children

Guaido has been the centrepiece of the Trump administration’s efforts to oust Maduro for more than a year, but that effort has struggled to gain traction even after the US rallied dozens of nations behind its initiative.

The US strategy that is emerging combines increased pressure on the Maduro regime through indictments and more sanctions along with a detailed plan for its exit and the establishment of new elections in which Maduro is theoretically free to run and, the US hopes, lose.

Bolstering their case, US officials point to opinion polls putting Maduro’s support at no greater than 15 per cent.

At the same time, Pompeo indicated the US would not let Maduro become president again under any circumstance.

“We’ve made clear all along that Nicolas Maduro will never again govern Venezuela,” Pompeo said at the news briefing.

Less than a week ago, the US Justice Department indicted Maduro and more than a dozen of his close aides on drug trafficking and money-laundering charges and put up million of dollars as rewards to those who help bring about their arrests and convictions.

Yet Maduro has hung on so far with continued support from the country’s military.

In a Tuesday morning article in The Wall Street Journal, Abrams called on the military to shift its role away from repressing its people, expel Cuban intelligence agents and support the transition. He also called for a new electoral council and supreme court and the re-establishment of a free press.

Guaido pushes past troops to retake Venezuela congress as rival flees

The envoy argued that, despite the US having backed Guaido for the past 14 months, it has never supported any particular party in Venezuela.

Still, it represents a shift in strategy by the Trump administration, which had predicted after throwing its support behind Guaido more than a year ago that Maduro would remain in power only for weeks, not months. Yet Maduro has taken an increasingly menacing tone toward the opposition.

On Monday evening, he warned of a “knock-knock” operation during a televised address, during which authorities will round up “terrorists” in the coming days to make them “face justice”.

By Tuesday morning, Venezuela’s public prosecutor had cited Guaido to appear before his office on Thursday regarding an investigation of an alleged plot to assassinate Maduro.