For the European leaders—including Volodymyr Zelensky, Ukraine’s president—gathered in the White House on Monday, a bright spot of the meeting was Donald Trump’s apparent willingness to support European “security guarantees” for Ukraine as part of a peace settlement with Russia. But, having lavished praise on Mr Trump, they now have to flesh out proposals that are at best hopelessly vague, and at worst desperately over-optimistic. 

And you might think you know everything about Pompeii—it has been dug up and talked about for three centuries. But about a third of it remains unexcavated. Our correspondent revisits the sex, the art, the home renovations and the tragedy to be found amid humanity’s most famous sudden mass burial.