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Oil prices jumped back above $100 a barrel and global stocks fell after weekend talks between the US and Iran ended without an agreement and Donald Trump imposed a blockade of the Strait of Hormuz. The US president announced the blockade on Sunday, targeting Iranian vessels and ships that have paid a toll to Iran for passage through the strait, in an attempt to choke off the flow of Iranian oil.US Central Command said it would start at 10am ET (5.30pm in Iran and 3pm in the UK), blocking all Iranian Gulf ports and coastal areas, in effect seizing control of maritime traffic in the Strait of Hormuz. The news drove oil and gas prices sharply higher again, after the two-week ceasefire between the US and Iran announced on Wednesday prompted a sharp fall in energy prices, and crude ended the week below the psychological $100 a barrel threshold.Brent crude rose by nearly 7% to $101.74 a barrel on Monday morning, while US crude is up more than 8% to $104.69 a barrel. Gas prices also increased, with the British wholesale gas contract for May soaring by 11.7% to 122.5p a therm. Analysts at JPMorgan Chase said last week they expected oil prices to stay high in the second quarter, above $100 a barrel, before easing in the second half of the year.Most Asian stock markets fell on Monday, with Japan’s Nikkei down 0.7% and Hong Kong’s Hang Seng index losing 1%, while Chinese stocks rose slightly. Sentiment was helped by Beijing’s announcement of a 10-initiative strategy aimed at deepening ties with Taiwan. European stocks also fell, led by airlines including Lufthansa, Wizz Air, easyJet and British Airways parent IAG. The FTSE 100 index in London lost 0.4%, dropping 45 points to 10,555. Germany’s Dax fell 1%, Italy’s FTSE MiB slipped 0.7% and Spain’s Ibex was down 1.1%. With oil and gas prices rising sharply higher, energy companies such as BP and Shell are rallying.Priyanka Sachdeva, senior market analyst at the broker Phillip Nova, said: “In today’s environment, every barrel of risk added to oil markets carries an inflation price tag for the global economy.” She added: “The market reaction underscores a simple but powerful reality: Hormuz risk is not theoretical; it is structural, and it is real.”Interest rate expectations have shifted again; investors now see an 84% chance of two rate increases from the Bank of England this year to tackle rising inflation, up from 60% on Friday. Before the Iran war, the central bank was expected to cut rates. The price of gold fell 0.4% to $4,730.75 an ounce as the blockade fuelled inflation concerns, prompting traders to scale back expectations for Federal Reserve rate cuts this year.

Oil markets experienced a dramatic correction on Wednesday, with Brent crude falling 13.9% to $94.10 per barrel and U.S. WTI futures sliding almost 16% to $95, marking the steepest daily percentage drop since the COVID‑19 crash of April 2020. Despite the plunge, prices remain well above pre‑conflict levels, when Brent traded below $73.The price shock followed President Donald Trump's announcement of a two‑week, conditional ceasefire with Iran, contingent on Tehran reopening the strategic Strait of Hormuz for oil tankers. Iran’s foreign minister, Abbas Araghchi, confirmed the strait would be managed by the Iranian military during the grace period, while Iran’s national security council accepted the ceasefire on the condition that U.S. attacks be halted.Equity markets reacted positively. The pan‑European Stoxx 600 surged 4%, its biggest one‑day gain in over four years. In the UK, the FTSE 100 climbed nearly 3% to 10,646 points, its highest level since the early days of the Iran war. Travel and leisure stocks led the rally, with Air France up 14.5%, Lufthansa +11%, IAG +9.5% and TUI +12%.Oil majors were the notable laggards; BP and Shell each lost more than 5% as investors priced in continued supply uncertainty. Asian markets also posted strong gains: Japan’s Nikkei 225 rose over 5%, Australia’s S&P;/ASX 200 jumped 2.55%, South Korea’s Kospi surged 7.5%, Hong Kong’s Hang Seng added 3.1% and China’s CSI300 climbed 3.2%.Bond yields eased on the ceasefire news. The U.S. 10‑year Treasury yield fell to 4.24% from 4.30%, while the UK 10‑year gilt slipped to 4.7% from 4.9%.Safe‑haven assets rallied as well: gold rose more than 2% to $4,812 per ounce, and cryptocurrencies recovered, with Bitcoin up 2.9% to $71,327 and Ether gaining 5.6% to $2,234.Market strategists emphasized the provisional nature of the relief. Jim Reid, Deutsche Bank markets strategist, warned that “investors will be breathing a big sigh of relief, but the durability of the ceasefire remains the key risk.” He noted ongoing Israeli‑Iran strikes and unclear extensions to Lebanon could reignite volatility.Energy analyst Saul Kavonic (MST Financial) described the pause as “an off‑ramp for Trump’s bombastic ultimatum, but not yet an off‑ramp for oil markets or the war.” He expects a limited release of tankers from Hormuz in May, which would ease storage pressure without boosting production.Capital Economics chief economist Neil Shearing highlighted potential transit fees for Hormuz passage, estimating a $1‑2 million charge per tanker—equivalent to roughly $1 per barrel—would have a modest effect on global oil prices but could signal a de‑facto partial nationalisation of the route.TD Securities senior strategist Prashant Newnaha cautioned that “renewed escalation cannot be ruled out, but markets are treating this ceasefire as the real deal, and all parties will sell it as a major win.” He added that oil prices are unlikely to revert to pre‑war levels, keeping inflationary pressures alive.Earlier in the week, U.S. equities swung sharply, with the S&P; 500 dipping 1.2% before rebounding after Pakistan’s prime minister urged Trump to extend the deadline and keep the strait open.The conflict, which began after the U.S. and Israel struck Iranian targets in late February, has choked the Strait of Hormuz—through which about 20% of global oil and LNG supplies flow—fueling a worldwide energy crunch.