When Elizabeth became Queen in 1952, Stalin was still leader of the USSR and Truman President of the US. Since then she has seen 15 British Prime Ministers come and go and had only this week welcomed her 16th - Liz Truss - to Blamoral
She has also seen 14 American Presidents take power at the White House - and met 13 of them during her tenure.
On a visit to Cardiff in 2021, she was caught expressing her irritation at world leaders having not committed ahead of a climate summit being held in Glasgow the following month.
