Three days after Franklin Delano Roosevelt declared that the USA was at war with Japan, Germany and Italy declared war on the USA.
From the BBC archives,
Benito Mussolini, made his declaration first – from the balcony over the Piazza Venezia in Rome – pledging the ‘powers of the pact of steel’ were determined to win.
The Piazza Venezia was the site of a happier moment 12 years later as Gregory Peck tooled around with Anglo/Dutch WWII survivor Audrey Hepburn on a scooter in the movie Roman Holiday. Hepburn won and Academy Award for her role.