Brent crude futures climbed more than 5% in London trading, pushing the benchmark contract above $88 per barrel.
The sharp rally marks a decisive reversal from the previous session, where prices had retreated amid fading geopolitical tensions.
The surge reflects renewed market anxiety over supply constraints in the Middle East.
Traders are reacting to earlier statements from US President Donald Trump regarding the potential reinstatement of a blockade on Iranian ports.
This development has reignited concerns about shipping disruptions in the Strait of Hormuz, a critical chokepoint for global oil flows.
The price action underscores the sensitivity of energy markets to geopolitical headlines.