BY EMMANUEL OGBONNA

Global oil prices jumped sharply on Monday while financial markets showed mixed reactions, as escalating tensions between Iran and the United States disrupted one of the world’s most critical النفط transit routes, the Strait of Hormuz.

The strategic waterway, which handles a significant share of global crude exports, was effectively closed again after Tehran reversed an earlier decision to allow tanker traffic. The move followed confirmation from Donald Trump that a U.S. naval blockade targeting Iranian ports remained fully operational, intensifying fears of prolonged supply disruptions.

Energy markets reacted immediately. U.S. benchmark crude rose 5.3% to settle at $87.88 per barrel, while Brent crude, the international benchmark, climbed by the same margin to $95.62 per barrel. The renewed spike underscores how sensitive oil markets remain to geopolitical risk, particularly in chokepoints like the Strait of Hormuz, where even temporary closures can have outsized global consequences.

Equity markets, meanwhile, struggled to find clear direction. Futures tied to the S&P 500 and the Dow Jones Industrial Average both slipped 0.7%, signaling a weaker start for Wall Street after recent gains.

Across Europe, major indices declined in early trading as investors weighed the implications of higher energy costs and escalating geopolitical uncertainty. Germany’s DAX dropped 1.6%, while France’s CAC 40 fell 1.2%. In London, the FTSE 100 retreated 0.6%, reflecting broader caution among investors.

Asian markets showed greater resilience, with several benchmarks posting modest gains despite intraday volatility. Japan’s Nikkei 225 rose 0.6%, while South Korea’s Kospi added 0.4%. Hong Kong’s Hang Seng advanced 0.8%, matched by a similar increase in China’s Shanghai Composite. Australia’s S&P/ASX 200 edged up slightly, while markets in India and Southeast Asia posted mixed results.

Market analysts noted that recent gains in equities may be driven more by momentum than by strong underlying conviction. Investor sentiment has swung rapidly in recent weeks, closely tracking developments in the conflict and shifting expectations about its economic fallout.

The latest surge in oil prices follows a sharp reversal from late last week, when crude prices had plunged after Iranian officials signaled that the Strait of Hormuz would remain open to commercial shipping. That announcement had triggered a rally in global equities, with the S&P 500 reaching a record high and extending a multi-week streak of gains.

The Nasdaq Composite and the Dow Jones Industrial Average also posted significant advances during that rally, supported by easing energy concerns and optimism that the conflict might avoid a worst-case scenario for the global economy.

However, those gains proved fragile. The renewed closure of the strait has revived concerns about supply shortages, rising fuel costs and broader inflationary pressures. Disruptions in oil flows through the Persian Gulf can quickly ripple through global supply chains, affecting transportation costs, manufacturing inputs and ultimately consumer prices.

Geopolitical tensions have further intensified following reports that U.S. forces seized an Iranian-flagged cargo vessel accused of attempting to bypass the naval blockade. Iranian military officials condemned the action and warned of a forthcoming response, raising fears of further escalation.

Diplomatic prospects remain uncertain. A fragile, two-week ceasefire between the United States and Iran is due to expire later this week, with no clear indication of whether negotiations will produce a longer-term agreement. While earlier statements from Washington suggested that progress had been made toward a deal, the latest developments highlight how quickly conditions can deteriorate.

Since the conflict began, global markets have been characterized by sharp swings between optimism and anxiety. Investors have responded not only to geopolitical developments but also to economic indicators, including corporate earnings reports that have, in some cases, exceeded expectations and provided temporary support to equities.

Currency markets reflected a cautious shift in sentiment. The U.S. dollar strengthened slightly against the Japanese yen, rising to 159.02 yen, while the euro edged higher against the dollar to $1.1759.

As the situation continues to evolve, traders and policymakers alike are closely monitoring developments in the Strait of Hormuz. Any sustained disruption to oil shipments through the region could have far-reaching consequences for global growth, inflation and financial stability, reinforcing the central role of geopolitical risk in shaping the outlook for the world economy.

Original article