Bad news for markets, borrowers, and consumers: Trump is restarting the fight with Iran, blocking oil through the Strait of Hormuz, and threatening a huge tax on world shipping, all of which points to higher inflation and higher interest rates.

• Oil jumped 10% after the US reimposed its blockade of the Strait of Hormuz, and more strikes on Iran could come within a day.
• Government bond yields are climbing hard, with markets now seeing a real chance the Fed hikes rates this month instead of cutting.
• Higher rates make US debt far more painful, since the government already owes as much as it did during World War II and interest costs keep rising.
• The AI boom is at risk because big tech needs cheap borrowing to build data centers, and with rates above 5% that spending gets hard to justify.
• Trump wants a 20% fee on the value of every cargo passing through Hormuz, which would add roughly $12–16 to each barrel of oil and hit gas and food prices worldwide.

Outlook: If the escalation and tax threats continue, expect higher oil, gas, and grocery prices, more pressure on stocks, and a possible sharp market drop in the weeks ahead.