Iran War Resumes, Oil Spikes as Wall Street Slides — July 30, 2026

Top U.S. Stories

• The Iran war resumed after a period of relative calm: Iran’s Revolutionary Guard (IRGC) attempted a “surprise” ballistic missile attack on a U.S. base and a Central Command-linked site in Jordan, which U.S. forces intercepted, CENTCOM said (CNN). Why it matters: the attack ends the fragile pause and puts the region — and oil markets — back on a war footing.
• Hours earlier, U.S. and Saudi forces carried out their first joint airstrikes of the war on Iran-aligned militia sites across Iraq, killing at least 20 fighters and wounding 32 (Al Jazeera).
• President Trump told Fox News the U.S. “will be hitting Iran hard” in response to the Jordan attack (Bloomberg). Why it matters: a stated intent to retaliate raises the odds of a wider, prolonged conflict rather than a quick de-escalation.
• The Federal Reserve held interest rates steady at its July 29 meeting, but three committee members dissented in favor of a hike — an unusually split vote (Yahoo Finance). Why it matters: the dissent signals inflation concerns are far from settled, and bond markets read it as a hawkish hold.
• A magnitude-7.1 earthquake struck Kumamoto, Japan on July 28, with a maximum intensity of 7. Multiple deaths have been confirmed, including five workers at a Nippon Paper plant, with several people still unaccounted for (NHK).
• Japan’s central bank, the Bank of Japan, is meeting July 30–31 and is widely expected to hold its policy rate steady for a fourth consecutive meeting, with results due July 31 (Nikkei).

Markets

U.S. stocks fell sharply on July 29: the Dow dropped 1,153.18 points (-2.19%) to 51,594.14, the S&P 500 slid 1.52% to 7,316.15, and the Nasdaq fell 1.74% to 24,442.94 (TheStreet). The 10-year Treasury yield rose 7 basis points above 4.67% after the Fed’s hawkish hold. Oil surged on the Iran escalation: WTI crude gained 6.4% to $84.31 a barrel and Brent rose 6.6% to $89.61 (Bloomberg). The yen traded around 163.68-163.70 per dollar as of July 29, 5pm Tokyo time (Minkabu; confirmed via frankfurter.app, same date) — even weaker than the ~39-year low of 162 the yen touched on June 30.

Stocks in Focus

• Kioxia Holdings — the memory-chip maker’s shares fell below the ¥40,000 level on July 29 ahead of its July 31 earnings, amid ongoing concerns about AI-investment overheating.
• Energy shares — oil-linked names drew renewed attention as WTI and Brent both jumped more than 6% on the Iran escalation.
• Defense-related stocks — the joint U.S.-Saudi strikes in Iraq and the renewed Iran conflict kept investor attention on defense names in U.S. and European markets.

This is not investment advice; the above names are cited for informational purposes only.

Compass Insight

Today’s throughline: a geopolitical shock hit currencies, oil, and equities all at once. The Iran ceasefire that markets had started to take for granted broke down overnight, and that repricing shows up everywhere — oil up sharply, the dollar stronger against the yen, and U.S. equities down on both the war news and a Fed that stayed hawkish despite holding rates. The yen’s slide to the upper-163 range — beyond the ~39-year low it hit in late June — reflects both the oil-driven import-cost pressure and the widening US-Japan rate gap. For household budgets, the yen-oil combination is the one to watch: a weaker yen plus pricier crude tends to show up at the gas pump and in utility bills before it shows up anywhere else. For portfolios tied to U.S. or semiconductor equities, the past day’s swings are a reminder of how quickly sentiment can reverse. Short term, watch how the Iran conflict evolves and Thursday’s Bank of Japan decision. Longer term, the durability of Middle East tensions and the pace of Fed and BOJ policy will matter more than any single day’s headline.