World leaders descend on London ahead of Queen Elizabeth’s funeral

London is facing a huge security challenge as hundreds of world leaders and dignitaries arrive in the British capital for the funeral of Queen Elizabeth on September 19, 2022. US President Joe Biden and his wife paid their respects to the late monarch at Westminster Hall on September 18, and met her son King Charles. China’s Vice-President Wang Qishan has also been confirmed to attend the ceremony, which would make him the most senior Chinese official to visit Britain since the start of the…