US Treasury Secretary Bessent said that from Sept. 23 all Iranian airlines will be barred from operating worldwide.

The Information reports a source saying OpenAI and Anthropic have negotiated a legally binding agreement to mutually stress‑test each other’s AI models. Talks reportedly occurred before OpenAI technology prompted a series of cybersecurity incidents and industry warnings; it is unclear if the pact has been finalized. The mutual‑testing proposal mirrors Elon Musk’s suggestion at last week’s All‑In summit that competing AI labs peer‑review each other’s models for safety prior to commercial release.

YONHAP: South Korea's foreign minister, in New York for the 81st UN General Assembly high-level meetings, will hold trilateral talks with US Secretary of State Rubio and Japanese foreign minister MOTEGI on the 21st (local time).