President Donald Trump's declaration that an interim deal to end the war with Iran was "over" sent global markets into a tailspin on July 8, 2026, threatening to worsen inflation and squeeze households already facing elevated energy costs. Speaking at a NATO summit in Turkey, Trump said he had no interest in further talks with Iran and warned that Washington would likely carry out additional strikes on Wednesday night. "For me, I think it's over," he said, though he added he would allow U.S. representatives to continue negotiations while calling the effort "just a waste of time dealing with them."
The S&P 500 fell as much as 1.1% before trimming its loss to 0.3%, while the Dow Jones Industrial Average dropped 576.76 points, or 1.1%, to 52,348.39. The Nasdaq composite rose 0.2% to 25,870.65 after erasing an early loss. Reuters reported the S&P 500 ended down 0.28% at 7,482.71, the Nasdaq gained 0.20%, and the Dow fell 1.09%.
Energy Prices Spike, Threatening Household Budgets
Brent crude climbed 5.2% to $78.02 a barrel and briefly topped $80. Oil prices jumped more than 5% after Trump's remarks, adding to a higher energy-price environment that's already straining family budgets. The concern isn't abstract: a continuation of the war could block the Strait of Hormuz and prevent crude from moving from the Persian Gulf to customers worldwide. That could worsen inflation and force the Federal Reserve and other central banks to raise interest rates, making mortgages, car loans, and credit card debt more expensive for working families.
Treasury yields rose with oil prices. The yield on the 10-year Treasury briefly neared 4.60% before pulling back to 4.57%, up from 4.55% late Tuesday and from 3.97% before the war with Iran began. Traders were pricing in a likely rate hike by the Fed's December meeting, according to CME's FedWatch.
Gold and Metals Fall as Rate Hike Fears Grow
Gold prices moved lower despite the geopolitical turmoil. Spot gold fell 0.9% to $4,067.39 an ounce by 2:10 p.m. EDT after hitting its lowest level since July 1 earlier in the session. U.S. gold futures for August delivery settled 1.8% lower at $4,082.40 an ounce. David Meger, director of metals trading at High Ridge Futures, said, "The main factor for today's move is the increased escalation in tensions between the U.S. and Iran, with a potential ceasefire over, we've seen risk assets across the board trade lower, gold included."
Traders were pricing in about a 69% chance of a U.S. rate hike in September, up from 62% on Tuesday, according to the CME FedWatch Tool. Bank of America said in a note dated Tuesday that it was reducing its 2026 average gold forecast by 14% to $4,360 on a more hawkish Fed, but still saw $5,000 in reach once the tightening cycle ends. Spot silver fell 2.9% to $58.25 an ounce, platinum shed 3.6% to $1,580.92 and palladium dipped 4.5% to $1,219.84.
Global Growth Forecast Cut Amid War's Economic Toll
The International Monetary Fund cut its 2026 global growth forecast to 3.0% from 3.1% in April and said growth should rebound to 3.4% in 2027. The IMF said the world economy had dodged a sharper downturn, with demand for artificial intelligence and other technologies helping offset a sharp drop in energy supplies caused by the war. Petya Koeva Brooks, deputy director of the IMF's research department, said, "In effect, we expect a V-shaped recovery, weaker growth this year relative to our pre-war forecast, followed by a rebound next year." She also said, "The world economy has weathered the shock from the war better than feared so far, with limited evidence of second round effects."
The IMF raised its 2026 headline inflation forecast to 4.7% from 4.4% in April and said it should fall to 3.9% in 2027. It said energy prices were 25% higher than before the war began on February 28 and that the new forecast assumed the Strait of Hormuz would start to reopen in mid-July and traffic would gradually normalize by March 2027. It assumed an average oil price of $89 a barrel.
The IMF left its 2026 growth forecast for the U.S. economy unchanged at 2.3% and raised its 2027 forecast by 0.1 percentage point to 2.2%. It lowered the euro area's 2026 forecast to 0.9% from 1.1% in April and left 2027 at 1.2%. Japan's 2026 forecast edged down to 0.6%, with 2027 raised to 0.7%. South Korea's growth forecast was revised up by 0.7 percentage point to 2.6% because of strong AI hardware exports.
Emerging Economies Bear Disproportionate Burden
Emerging market and developing economies saw a 0.1 percentage point cut to 3.8% in 2026, with 2027 raised to 4.5%. China's growth was expected to reach 4.6% in 2026 and 4.1% in 2027. India's 2026 forecast was trimmed to 6.4% from 6.5%, while its 2027 forecast was lifted to 6.7% from 6.5%. The Middle East and Central Asia region saw its 2026 forecast cut by 1.2 percentage points to 0.7%, while its 2027 forecast was raised by 1.9 percentage points to 6.5%.
In Asia, South Korea's Kospi dropped 5.3% amid sharp swings tied to AI stocks, while Hong Kong's Hang Seng index rose 3%. Shares of Chinese AI startup Zhipu, also known as Z.ai and traded as Knowledge Atlas Technology, jumped 13.4%. A six-month lock-up period for cornerstone investors after Zhipu's January trading debut in Hong Kong was set to expire that week, and China National Radio reported late Tuesday that nearly 70% of Zhipu's cornerstone investors were committed to stay on. Zhipu's share price had risen more than 1,300% since its debut.
Warning: Low-Income Countries Face Food Insecurity Risk
The IMF said the war's economic damage had been limited partly because countries could draw on existing oil stockpiles and because oil-exporting countries outside the Persian Gulf stepped up production. Petya Koeva Brooks said countries had also adapted quickly by finding alternative routes and supplies. She warned, "There's still a lot of uncertainty," and said a renewed escalation could reignite commodity-price volatility, tighten financial conditions, strain policy buffers and worsen food insecurity in low-income countries. She also said higher oil prices could de-anchor inflation expectations and trigger a correction in financial conditions. Deniz Igan, who leads the IMF's work on economic updates, said, "A renewed conflict in the region is going to catch the global economy in a worse position than it was the first time."
Why This Matters:
Trump's decision to abandon diplomatic efforts with Iran doesn't just rattle markets—it threatens real economic pain for ordinary people. Higher oil prices mean higher costs at the pump, for groceries, and for heating homes. If the Federal Reserve responds to inflation by raising interest rates, families will face steeper mortgage payments and credit card bills. The IMF's warning about food insecurity in low-income countries reveals how geopolitical decisions made in Washington ripple outward, hitting the world's most vulnerable populations hardest. The conflict underscores the need for coordinated international diplomacy and multilateral institutions to prevent regional wars from spiraling into global economic crises. When diplomacy fails, working families everywhere pay the price through their household budgets, while the specter of renewed military escalation threatens to destabilize an already fragile recovery.