In today’s newsletter: Why Sam Altman was fired as the company’s CEO, why he was rehired – and what it all means for the field

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Good morning. Boardroom coups are always pretty absorbing; a boardroom coup at a company that has set itself the lofty goal of “building artificial general intelligence (AGI) that is safe and benefits all of humanity” is more absorbing still.

The removal of chief executive Sam Altman from OpenAI, which made the artificial intelligence chatbot ChatGPT, has therefore been the subject of breathless attention since it was announced last Friday. Now Altman has got his job back, and there’s even more to get your head around.

Israel-Hamas war | Israeli officials have said a four-day Gaza truce and hostage release will not start until at least Friday, stalling a breakthrough deal to pause the bloody seven-week-old war and thwarting the hopes of families that some captives would be freed on Thursday.

Autumn statement | Jeremy Hunt sought to blunt the impact of the highest levels of taxation since the second world war with a cut in workers’ national insurance contributions, fuelling speculation about a snap spring general election. The chancellor used a fresh squeeze on public spending to pay for a reduction in NICs worth £450 a year to the average employee. See the key points and what it means for you.

Netherlands | Geert Wilders’ far-right, anti-Islam Party for Freedom (PVV) is on course to be the largest party in the Dutch parliament, according to exit polls, in a major electoral upset whose reverberations will be felt around Europe. The PVV was predicted to win 35 seats in the 150-seat parliament, but may not be able to form a governing coalition.

Covid inquiry | Prof Sir Jonathan Van-Tam and his family were advised by police to move out of their home during the pandemic because of a threat that they would have their throats cut, he has told the Covid inquiry. Van-Tam said that he feared the scale of such abuse would put people off taking up similar roles in the future.

US and Canada | Four border crossings between the US and Canada were closed on Wednesday after a vehicle exploded at a checkpoint on a bridge near Niagara Falls, reportedly killing two people. Governor of New York Kathy Hochul said there was “no indication of a terrorist attack”.