Tuesday briefing: David Cameron is back in government – can he help save Sunak?

In today's newsletter: Why the former prime minister has returned to frontline politics as Rishi Sunak's foreign secretary

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Good morning. David Cameron really is the new foreign secretary. In a way, Rishi Sunak warned us: just over a year ago, he told Tory party conference that his mission was to break with a failed 30-year political consensus and usher in something genuinely different. All the same, I don't know if anyone could have predicted that he was planning to go back to a 60-year-old idea, instead. Even Cameron, truly the grown-up's grown-up, was barely out of nappies when Alec Douglas-Home, the last former prime minister to take over at the foreign office, got the job in 1970.

On the other hand, it seems ... quite hard to break with a 30-year consensus by appointing one of its architects, even if doing so successfully drives the firing of home secretary Suella Braverman - who lost her job via an unceremonious phone call - from the front pages. He was the future once," the new cabinet minister once teased Tony Blair at prime minister's questions. We can now say that Cameron was the past once, a significantly more mind-bending proposition. The weirdest fact of the day: seven years after his resignation as prime minister, he's still four years younger than Keir Starmer.

Israel-Hamas war | Israeli forces have reached the gates of Gaza's largest hospital as hundreds of patients, including dozens of babies, remained trapped inside. Thousands of people have fled al-Shifa hospital in Gaza City, but health officials said the remaining patients were dying due to energy shortages amid intense fighting between Israeli troops and Hamas militants. For the latest, head to the live blog.

Iceland volcano | Iceland's prime minister has sought to reassure the nation as it braces for a volcanic eruption. Between midnight and early afternoon on Monday, the Icelandic meteorological office detected about 900 earthquakes amid warnings of the significant likelihood of the Fagradalsfjall volcano erupting within days.

Fertility | People who donate sperm, eggs and embryos to help others have children will lose the right to anonymity from the moment the child is born, under proposed changes to UK fertility law. The proposal, prompted by the ease with which people can sidestep formal routes to trace donors via private DNA testing and social media, is one of several proposals published by the regulator today.

Environment | BP and Spotify were among companies who bought carbon credits at risk of being implicated in potential Uyghur forced labour, an investigation has found. A Guardian investigation found that provider South Pole was aware of the risk of forced labour linked to the scheme in 2021.

Counter-terrorism | Downing Street's plan to ban the glorifying of terrorism risks criminalising supporters of the suffragettes, Nelson Mandela, or even the crowd at Murrayfield belting out Flower of Scotland", a former independent reviewer of terror legislation has warned.