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Good morning. OpenAI hires former Twitch CEO after Sam Altman’s ouster, Argentina elects a libertarian outsider as new president, and a nascent bond market rally faces a big test. Here’s what people are talking about.

OpenAI’s board has hired Emmett Shear, the former chief executive officer of Amazon’s game-streaming site Twitch, to replace Sam Altman, who was fired as CEO on Friday. Efforts to reinstate Altman after a busy weekend of negotiations appeared to fail late on Sunday in San Francisco. Altman’s ouster sent ripples across the business world and followed his efforts to raise billions of dollars for a new chip venture. Here’s an in-depth take of the events leading to Altman’s firing.