the daily brief

• Russia launched a fresh ballistic missile attack on Kyiv early Tuesday, hours after a day-long barrage killed two and injured 26; strikes hit the National Academy of Sciences and the Dobrobut medical center, with European officials accusing Russia of targeting civilians, science and critical infrastructure — forbes
• Trump agreed to grant Ukraine licenses to produce Patriot air-defense interceptors domestically, though defense experts caution this is a long-term fix that won't address Ukraine's immediate shortage of interceptor munitions — al jazeera
• Ukraine pressed on with long-range drone strikes on Russian oil refineries and industrial sites, with strikes killing six people in Russia and Russian-occupied territory on September 26 — al jazeera
• The Houthis sharply escalated missile and drone strikes on Saudi Arabia, including the recent attack on Riyadh; Trump said the US is in constant communication with the group, which has so far agreed not to fight American forces — abc news
• Turkish Airlines, AJet and Pegasus suspended flights to and from Iran as new US sanctions targeting Iran's aviation sector took effect — institude
• Two more bodies were recovered in the search for a ferry that sank off Kyrenia, Turkish Cyprus, while en route to Türkiye's southern province of Mersin — institude
• Trump praised Erdoğan while discussing efforts to advance a Gaza peace process — institude
• Ankara hosted the 8th International Turkic World Tourism Congress with the Organization of Turkic States and Türkiye's culture ministry — institude

• Anthropic released Claude Sonnet 5.5, offering about 30% faster performance and up to 30% lower cost than its predecessor — anthropic
• Anthropic published a "Situation Report" describing how the WHO and other health organizations are using Claude to help coordinate the response to an Ebola outbreak in the Democratic Republic of Congo — anthropic
• British Columbia sued OpenAI and Sam Altman over the February 10 Tumbler Ridge school shooting that killed eight, alleging OpenAI flagged the shooter's ChatGPT account in June 2025 over gun-violence-related discussions but did not alert police until after the attack — cbc

• Stocks fell Monday as the 10-year Treasury yield climbed to 5.25%, its highest since 2007, amid oil-market volatility following Trump's rejection of Iran's ceasefire proposal — the Dow lost 0.7%, the S&P 500 fell 0.8% and the Nasdaq dropped almost 1% — yahoo finance
• Nvidia shares rose nearly 1%, outperforming the broader market, after the company authorized another $150 billion for its stock buyback program, bringing the total to $235 billion — yahoo finance

• New France head coach Zinedine Zidane called Türkiye a "very good team" ahead of his first match in charge, a UEFA Nations League Group 1 opener against the Crescent-Stars at Kocaeli Stadium — institude
• Physicists showed that exotic quantum particles called non-Abelian anyons can perform the full range of operations needed for universal quantum computing — sciencedaily
• Blood tests revealed why astronauts get constipated in space, according to a University of Copenhagen study — sciencedaily
• University of Oregon biologists resurrected 160-million-year-old antimicrobial peptides from ancient mammals and found some were more potent against drug-resistant bacteria than modern human versions — sciencedaily
• A new study found coffee, whether caffeinated or decaf, is linked to lower stress, depression and impulsivity through measurable changes in gut bacteria, with caffeinated coffee reducing anxiety and decaf improving learning and memory — sciencedaily
• A newly identified Cretaceous species from Mongolia's Gobi Desert resolved a 40-year paleontology mystery, showing that zhelestids — long misclassified by their teeth as early relatives of hoofed mammals — actually belonged to a separate lineage of small mammals — sciencedaily

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