People mourn death of Britain's Queen Elizabeth II(1/6)

A British national flag flies at half-mast above Buckingham Palace following the announcement of the death of Queen Elizabeth II in London, UK, Sept. 8, 2022. (Photo/Agencies)

Queen Elizabeth II, Britain's longest-reigning monarch in history, has died aged 96.

A notice announcing the death of Queen Elizabeth II is placed on the gate of Buckingham Palace in London, UK, Sept. 8, 2022. (Photo/Agencies)

People gather in front of Buckingham Palace in the evening rain, placing flowers in memory of Queen Elizabeth II in London, UK, Sept. 8, 2022. (Photo/Agencies)

People gather in front of Buckingham Palace in the evening rain, placing flowers in memory of Queen Elizabeth II in London, UK, Sept. 8, 2022. (Photo/Agencies)

People gather in front of Buckingham Palace in the evening rain, placing flowers in memory of Queen Elizabeth II in London, UK, Sept. 8, 2022. (Photo/Agencies)

People gather in front of Buckingham Palace in the evening rain, placing flowers in memory of Queen Elizabeth II in London, UK, Sept. 8, 2022. (Photo/Agencies)