Trump Vows to Maintain Iran Blockade Until Nuclear Deal Reached as Brent Crude Hits $118

President Donald Trump escalated the US-Iran standoff on Wednesday by vowing to maintain a naval blockade of Iranian ports until Tehran agrees to comprehensive nuclear terms, sending oil markets into a fresh tailspin and propelling the US Dollar to new highs.

Speaking to reporters, Trump declared the United States will continue blocking shipping access to Iran's ports "until they cry uncle" and sign a deal ensuring the regime will never obtain nuclear weapons. The announcement came after the president held talks with major oil companies on mitigating the impact of a potentially months-long blockade.

Oil Surges Past $118 as Blockade Extended

Brent crude futures jumped 6% to close at $118.03 per barrel on Wednesday, with intraday trading reaching as high as $120.30—representing an 8.13% single-day surge. West Texas Intermediate (WTI) crude climbed 6.96% to $106.88 per barrel, marking the highest settlement since early 2023.

The dramatic price action follows Trump's rejection of Iran's latest diplomatic proposal. According to multiple sources familiar with the negotiations, Tehran offered to end its closure of the Strait of Hormuz—which handles roughly 20% of global oil supply—while postponing nuclear discussions to a later stage. The White House dismissed the proposal as insufficient.

"Iran informed us they are in a 'state of collapse' and figuring out their leadership situation," Trump said earlier this week, suggesting internal turmoil within the Islamic Republic. "But we're not lifting anything until we have a comprehensive deal."

Dollar Strengthens on Safe-Haven Demand

The US Dollar Index ($DXY) rose 0.40% on Wednesday, climbing from session lows near 98.57 to peak above 99.05 during Federal Reserve Chair Jerome Powell's final press conference. The greenback closed around 98.98, extending gains against most major currencies as traders sought safety amid escalating geopolitical risk.

EUR/USD declined to 1.1674 as of early Thursday trading, down from 1.1748 earlier this week, as the European Central Bank prepares for its own rate decision later today. The euro faces dual headwinds from stagflationary pressures in the eurozone and dollar strength driven by US monetary policy divergence and risk-off flows.

USD/JPY continues to hover near the psychologically critical 160.00 level despite repeated intervention warnings from Japanese authorities, reflecting sustained dollar demand and widening US-Japan rate differentials.

Energy Shock Threatens Global Growth

The extended blockade poses a severe threat to the global economy, which was already grappling with elevated cpi" title="Understanding inflation and CPI in forex">inflation from previous supply disruptions. With the Strait of Hormuz effectively closed since mid-April and US naval forces now preventing access to Iranian ports, roughly 21 million barrels per day of crude oil—equivalent to 21% of global petroleum consumption—remains off the market.

Major central banks, including the Federal Reserve, European Central Bank, and Bank of Japan, have all signaled caution this week about the inflationary impact of sustained high energy costs. The Fed held interest rates steady at 3.50% to 3.75% on Wednesday despite a contentious 6-5 vote split, while the ECB is widely expected to maintain its 2.0% deposit rate when it meets Thursday.

"The Iran situation has fundamentally altered the inflation outlook," said analysts at Citadel. "Hawks at the ECB will absolutely push hard to move towards a rate hike if oil remains above $115, and they have a reasonable justification for it."

Negotiations Remain at Impasse

Behind the scenes, US Central Command (CENTCOM) has prepared contingency plans for both a short-term reopening of the Strait and an extended blockade lasting several months. However, Trump's rejection of Iran's phased approach indicates negotiations may remain stalled for the foreseeable future.

The diplomatic deadlock comes as Iran faces mounting economic pressure. The regime's offer to reopen the Strait in exchange for transit fees—without immediate nuclear concessions—was seen by Washington as an attempt to set an unwelcome precedent for international shipping routes.

"We're not paying Iran for the privilege of using international waters," a senior White House official told Reuters. "The blockade stays until we have a comprehensive nuclear agreement."

Market Implications and Key Levels

Traders and analysts are now positioning for an extended period of elevated oil prices and dollar strength:

• Brent crude: Support at $115, with resistance at $125 if the standoff persists into May
• WTI crude: Key level at $110, targeting $115 on continued supply constraints
• EUR/USD: Downside risk toward 1.1600 if ECB disappoints hawks; upside capped at 1.1750
• USD/JPY: Intervention zone remains 160-162; sustained break higher could trigger coordinated action from Japanese authorities
• Gold (XAU/USD): Consolidating near four-week lows around $3,350 as dollar strength offsets safe-haven demand

What to Watch

The coming days will be critical for currency and commodity markets. Key catalysts include:

• ECB rate decision (Thursday, April 30): Watch for hawkish language regarding summer rate hikes if oil stays elevated
• Diplomatic developments: Any signs of movement in US-Iran negotiations could trigger sharp reversals in oil and dollar positions
• Supply response: OPEC+ emergency meetings remain a possibility, though the UAE's recent exit from the cartel complicates coordination
• Technical levels: Brent above $120 and DXY above 99 represent key breakout zones that could accelerate momentum

For forex traders, the current environment favors EUR/USD shorts and long USD/JPY positioning, though both carry elevated intervention risk. Commodity-linked currencies like AUD/USD and USD/CAD face conflicting pressures from dollar strength versus oil-driven inflation concerns.

The energy shock has effectively paralyzed major central banks, forcing policymakers into a painful stagflationary dilemma where tightening to combat inflation risks choking off already fragile growth. With Trump showing no signs of backing down and Iran equally committed to its negotiating position, markets are preparing for an extended period of volatility across forex, energy, and fixed-income markets.