Last month’s solution

The leaders each send French president Emmanuel Macron a gift that begins with the same letter as their capital city. So Boris Johnson sends a lantern from London, Olaf Scholz sends a bottle from Berlin, Pedro Sanchez sends a mirror from Madrid, Joe Biden sends a watch from Washington DC and so on. The capital city of Canada is Ottawa, so Justin Trudeau can send any gift beginning with the letter “O”— perhaps an ornament, or even an oyster!

Last month’s winner

Ann Raymond, London (who suggested an ottoman)

How to enter

Email your answer to answer@prospectmagazine.co.uk using the subject heading “Brain Teaser”