US president left last meeting early, but world leaders aim to end Ukraine war and push for resolution in Gaza and Iran

Emmanuel Macron, the host of the G7 summit in Évian-les-Bains, has framed an agenda to make it as palatable as possible to his guest of honour, but the French president has no idea if Donald Trump, a haphazard summit attender, will last the full three days – or disrupt the proceedings every hour he stays.

The US president quit the last G7 summit in Kananaskis, Canada, early to work on the Iran conflict, and this year, plus ça change, Iran may also draw presidential attention. For good measure, he insulted this summit’s host before leaving Canada last year, describing Macron as “publicity seeking” and adding: “Purposefully or not, Emmanuel Macron always gets it wrong.”