Global oil prices rose significantly in Asia on Monday following President Donald Trump's announcement of the U.S. seizing an Iran-flagged cargo ship. This development coincided with Iran's declaration of closing the Strait of Hormuz to commercial vessels, indicating a potential escalation in the ongoing maritime conflict.

Brent crude futures saw an increase of 4.74%, reaching $94.66 (£70.11) a barrel, while West Texas Intermediate (WTI) crude was up by 5.6%, priced at $88.55.

Energy markets have experienced substantial fluctuations since the U.S. and Israel's military actions against Iran on February 28, leading to threats from Tehran targeting shipping routes in the strategic Strait of Hormuz. This passage is crucial as it sees about 20% of the world’s oil and liquefied natural gas transit.

Earlier, President Trump highlighted that U.S. representatives would attend negotiations in Pakistan, led by Vice President JD Vance. However, Iranian state media expressed that Tehran had no plans for now to participate in these talks, leaving the country’s stance ambiguous.

Analyst Saul Kavonic from MST Marquee remarked that oil markets are reacting to frequent updates through social media rather than grounded realities that are hindering rapid oil flow recovery.

The Strait of Hormuz continued to remain closed as per announcements from the Islamic Revolution Guard Corps, which accused the U.S. of violating ceasefire conditions with their blockade. Trump reiterated that the naval blockade would persist until an accord is reached between the two nations.

As trading activities remain volatile since the inception of the Iran conflict, Brent crude oil previously traded under $70 before the escalation, with prices touching almost $120 by March 9. Futures contracts which are aged agreements for future delivery are currently set for June.

The conflict has precipitated a global energy crisis, leading to price hikes and potential fuel shortages in several countries. Asia, in particular, suffers significantly due to its reliance on oil shipments that typically pass through the Strait of Hormuz.

Governments have begun implementing measures such as work from home directives and reduced working hours to conserve energy supplies amidst rising costs. Countries like Singapore and Thailand have urged citizens to limit air conditioning usage as fuel shortages loom.

Even with reserves sufficient for three months of imports, China manages fuel price hikes, confronting an over 20% surge. Airlines across the region are introducing measures to mitigate the effects of rising jet fuel prices. Last week, the International Energy Agency warned that Europe could face critical fuel shortages if the blockade persists.

In the UK, petrol and diesel prices eased slightly after weeks of consistent increases.