The Rundown — September 18, 2026

THE WORLD · SEPTEMBER 18, 2026

What's going on right now, in one place. Items stay plain text until one of them becomes its own entry below — then it turns into a link.

Macro & markets

The Fed raises rates 25 basis points to 3.75%-4% in a unanimous vote, its first hike since 2023, with Chair Kevin Warsh citing inflation "too high ... for too long" and 16 of 18 officials expecting at least one more hike before year-end.

Bitcoin trades near $77,980 as of 8am ET, its third straight day of gains and down just 1.5% in September, historically its weakest month.
Hong Kong's 2026 Policy Address commits to letting regulated stablecoins trade on licensed platforms and settle tokenized money-market funds, with the HKMA in final review of 36 stablecoin-license applications.

Security firm Hacktron AI used Anthropic's Claude Opus 5 to chain three bugs into an exploit that reached OpenAI's internal GitHub and its "Monorepo" source code in under 72 hours; OpenAI paid $6,500 through its bug bounty program.
OpenAI, Anthropic and Google DeepMind have been in talks for weeks on AI safety, OpenAI policy chief Chris Lehane says, following Anthropic CEO Dario Amodei's essay urging the industry to slow the pace of frontier AI development.
Google's new Gemini 3.8 Flash Cyber model found a critical vulnerability in under two hours that research typically takes months to surface, and Google says it now beats Anthropic's Mythos 5 and OpenAI's GPT-5.6 Sol and GPT-5.5-Cyber at autonomous vulnerability discovery.

Physicists at Switzerland's Paul Scherrer Institute and ETH Zurich built a new cold muonium beam, capturing antimuons in superfluid helium near absolute zero, to test whether gravity pulls on this antimatter-containing atom the same way it pulls on ordinary matter — the team projects about 1% precision within roughly 100 days of data collection, published in Nature Physics on September 14.

Trump threatens "very serious tariffs" on the EU, or to "stop trading with Europe on many things," over Ursula von der Leyen's proposal to make Canada the bloc's first associate member; Canadian PM Mark Carney welcomed the idea in an address to the European Parliament.
The EU will disburse €3.3 billion ($3.8 billion) to Ukraine for missile and drone procurement, von der Leyen announces after a call with President Zelensky, bringing the bloc's mobilized aid to nearly €15 billion this year.
The US State Department approves a potential $24.3 billion sale of 48 F-35 fighter jets to Saudi Arabia — the kingdom's first F-35s, pending congressional approval.

At the September 14 Emmy Awards, "The Pitt" wins outstanding drama series for the second year running, and Matthew Rhys becomes the first performer to win lead-acting Emmys in two genres in one year — limited series for "The Beast in Me," comedy series for "Widow's Bay."
Taryn Simon's "Father Country Do I Love You" opens today at the Guggenheim in New York, filling Frank Lloyd Wright's rotunda with photographs, text, video and sculpture through March 14, 2027.