Traders on Polymarket assign a 27% chance the US launches a ground invasion of Iran before 2027, while a separate market prices a 19% chance of an effective ceasefire by the end of the month. A nuclear deal by the end of the year is priced at 33%. These probabilities emerge amid reports that President Donald Trump initiated the conflict believing the regime would collapse rapidly, a claim detailed in a new book by New York Times reporters Jonathan Swan and Maggie Haberman titled "Regime Change: Inside the Imperial Presidency of Donald Trump."

Market Probabilities and Economic Impact

The prediction markets offer a specific view on the duration and escalation of the conflict. The ground invasion contract resolves yes only if US forces commence an offensive intended to establish control over Iranian territory. Meanwhile, the economic implications are being tracked closely, with May CPI at 4.2%. Traders on Polymarket now price a 59% chance the Fed hikes rates this year.

Sector Performance and Valuations

The potential for prolonged conflict and elevated oil prices, with Brent above $91, creates a divergent outlook for equities. This environment may favor Exxon Mobil (NYSE: XOM) and Chevron Corp (NYSE: CVX). Conversely, high-multiple names such as Palantir Technologies (NASDAQ: PLTR) and Tesla Inc. (NASDAQ: TSLA) face pressure, as their valuations rely heavily on future earnings that are discounted more heavily in a rising rate environment.

Defense stocks have not provided the expected hedge for traders. Lockheed Martin (NYSE: LMT) hit an all-time high near $692 in March during the escalation but has since surrendered most of those gains following a disappointing first-quarter report.

Mediators have proposed a 10-day pause in U.S. strikes to explore options for reviving an Iran-U.S. interim agreement, according to a senior Iranian official. This diplomatic overture comes as President Trump stated in an interview with Fox Business that his administration received a call indicating Iran's desire to meet, adding that the country's military capabilities had been significantly weakened. The White House confirmed that Iran continues to engage the United States in talks and seeks a deal, even as U.S. forces have launched successive waves of strikes against Iranian military targets. Financial markets reacted to the heightened geopolitical tension through rising oil prices and sharp declines in Asian equities.

Diplomatic Developments

AFP reported that diplomatic exchanges with the United States are ongoing via mediators. A senior Iranian official has now indicated that those mediators proposed a 10-day halt in strikes as a window to explore the revival of an interim agreement between the two countries. Despite the diplomatic signals, Iranian Parliamentary Speaker Mohammad Bagher Ghalibaf maintained a defiant stance, stating Iran had never sought war but remained prepared for battle while supporting diplomacy.

Military Escalation and Targets

The U.S. Central Command (CENTCOM) announced it had launched a second round of strikes against Iranian military targets within 12 hours. The operation targeted military assets used to threaten commercial vessels transiting the Strait of Hormuz, specifically coastal defense systems and cruise missile infrastructure on Greater Tunb Island. Trump confirmed that strikes would persist until he deemed it "enough" and noted that a ground campaign had not been ruled out. CENTCOM also confirmed that a naval blockade of the Strait of Hormuz remains in effect.

Market Reaction and Oil Prices

Financial markets reflected the heightened geopolitical tension, with oil prices climbing on supply disruption concerns and Asian markets declining sharply. The escalation follows Trump's warning that military action would intensify if Tehran refused to engage in talks, with Brent crude rising above $85 per barrel. U.S. stock futures were mixed amid the uncertainty.

Sanctions and Policy Shifts

The U.S. Treasury announced new sanctions targeting an international network accused of procuring weapons for Iran's Islamic Revolutionary Guard Corps following attacks on commercial vessels. On the question of transit fees, Trump confirmed he has abandoned an earlier proposal for a 20% fee on vessels traveling through the Strait of Hormuz. Instead, he suggested that Gulf state allies could make "record" investments in the U.S. as an alternative arrangement, clarifying that any payments discussed were intended as reimbursement for U.S. efforts to secure the strategic shipping route rather than a transit fee.