(FILES) In this file photo taken on July 2, 2021 Britain's Queen Elizabeth II receives German Chancellor Angela Merkel during an audience at Windsor Castle in Windsor, Berkshire. - From a string of US presidents to Lady Gaga, Queen Elizabeth II met leading political and artistic personalities from around the globe during her record-breaking time on the throne. Some were despised dictators, others world-famous guitarists she made polite conversation with. Regardless of the personalities, she always kept her composure. (Photo by Steve Parsons / POOL / AFP)