The World in Brief from The Economist

The yield on American 30-year Treasuries fell slightly, to 5.55%, after having reached its highest level in almost a quarter of a century on Tuesday. Also, Donald Trump said top AI executives had signed a “morally binding” agreement to self-police safety standards.

The yield on American 30-year Treasuries rose to 5.6%—its highest in almost a quarter of a century.

The yield on American 30-year Treasuries rose to 5.6%—its highest in almost a quarter of a century. Yields on ten-year bonds climbed to 5.27%, its highest since 2007; Top AI executives met Donald Trump amid growing calls to regulate the technology.

OpenAI cancelled the release of GPT-6.1 Astra, planned for October, over safety concerns. Also, Nvidia, the world’s most valuable company, launched a platform to stop AI agents going awry.

A daytime Russian drone strike on the National Academy of Sciences in central Kyiv killed at least one person; 19 people were injured in total as Russia pounded the Ukrainian capital.

America and China will cut tariffs on around $30bn-worth of each other’s goods ($60bn in total)—including American corn and cosmetics, and Chinese toasters and toys—following Mr Trump’s meeting with Xi Jinping last week; A Russian drone strike on the National Academy of Sciences in central Kyiv killed at least one person; 19 people were injured in total as Russia pounded the Ukrainian capital.

Yields on ten-year Treasuries hit 5.20% and Brent crude rose to $106 a barrel after Iran said that it would not alter its proposed deal to reach a ceasefire and reopen the Strait of Hormuz. Also, British police detained five men on suspicion of preparing a terrorist act after a tip-off about suspicious activity near RAF Fairford.

Iran’s foreign minister, Abbas Araghchi, said American mediators had not officially relayed their rejection of an Iranian offer of a seven-day ceasefire.