Following a surprise military operation that removed Nicolás Maduro from power, President Donald Trump stated that US oil firms could be "up and running" in Venezuela within 18 months, a claim disputed by analysts.

• Trump believes US oil companies would spend "a tremendous amount of money" to ramp up production, helping to keep global oil prices down.
• Analysts had previously estimated it could take tens of billions of dollars and a decade to restore Venezuela's oil output.
• Venezuela possesses the world's largest proven oil reserves, estimated at 303 billion barrels, but production has been in decline since the early 2000s.