Iran Ceasefire Teeters on Edge; Oil Shock Spreads

The US-Iran ceasefire, brokered in April, deteriorated markedly in the week of May 12 after Trump dismissed Iranian peace proposals, causing the White House to signal the agreement was on the brink of collapse. Traders rushed to price in heightened energy risk; Brent and WTI crude approached $86 per barrel, and liquefied natural gas (LNG) markets experienced significant volatility. Qatar announced new safety measures requiring ships at its main LNG export facility to disable transponders, a precaution reflecting elevated geopolitical hazard.

The Strait of Hormuz, through which roughly one-third of global seaborne oil flows, remained partially blocked. A second Qatari LNG tanker exited the strait over the weekend, but traffic remained far below normal levels. Russian crude exports slowed due to drone strikes and weather alerts at Novorossiysk. Market participants including JPMorgan strategists noted that dwindling oil inventories could force a reopening of Hormuz or trigger emergency releases from strategic reserves to prevent a price shock that would tip the global economy into recession.

Central banks and commodity traders shifted positioning. Gold held steady as investors assessed inflationThe rate at which prices rise across an economy. risks, while emerging-market currencies and stocks fell on ceasefire concerns. The IMF warned that escalation could push the global economy toward recession. South Korea's 10-year bond yield surged above 4% for the first time since late 2023 on rate-hike expectations tied to the energy shock. Energy importers faced margin compression, while defense names and oil-service stocks benefited from elevated geopolitical risk premiums.

Key risks include a rapid escalation back to military conflict, which would likely trigger a severe oil shock and potential supply disruptions lasting weeks or months. Conversely, if diplomacy stabilizes and Hormuz reopens, the relief rally could be swift and substantial. Market positioning suggests elevated tail-risk hedging, making large reversals likely in either direction.