The World in Brief from The Economist

Brent crude, the international oil benchmark, rose above $100 a barrel for the first time since May; American stocks fell as investors fretted over tech firms’ AI spending.

America and Saudi Arabia signed a deal to build a civilian nuclear programme in the Gulf state. Also, oil prices surged after Houthi rebels struck two Saudi Arabian oil tankers in the Red Sea.

Saudi Arabia and America signed a deal to build a civilian nuclear programme in the Gulf state.

Mohammad Bagher Ghalibaf, the speaker of Iran’s parliament, warned that if Iran cannot export oil, “no one” in the region will. OpenAI said that GPT‑5.6 Sol, a frontier model, and another unreleased model hacked into a software company’s system without being told to do so.

OpenAI said that GPT‑5.6 Sol, a frontier model, and another unreleased model hacked into a software company’s system without being told to do so. Also, Saudi Arabia and America are expected to announce a deal on Wednesday to build a civilian nuclear programme in the Gulf state.

Volodymyr Zelensky sacked Oleksandr Syrsky, Ukraine’s top general, after days of protests calling for his ouster.

Volodymyr Zelensky sacked Oleksandr Syrsky, Ukraine’s top general, after days of protests calling for his ouster; Andy Burnham said he would cut taxes on electricity bills on his first full day as Britain’s prime minister—a modest start despite his bold rhetoric.

Mr. Burnham unexpectedly picked John Healey to be chancellor. Also, Donald Trump will impose a new 50% tariff on many Canadian goods for “discriminatory treatment of American products”.