Police officers lay wreaths at the memorial to the July 7 victims in London's Hyde Park
London commemorates 20 years since city's deadliest terror attack
Prince William bows his head in respect at the memorial service
Fifty-two thousand petals fell in St Paul's Cathedral on Monday to honour the 52 victims of London's July 7 bombings, as King Charles III paid…
Shizuko Nishio was the only child in her kindergarten class to survive the US bombing of Tokyo on March 9-10, 1945
The nighttime raid caused an inferno that consumed 16 square miles (4,145 hectares) of the Japanese capital
Yoko Kitamura, who survived the bombing, always hated the sound of ambulances because it reminded her of the scream of air raid sirens
Shizuko Nishio, who was six at the time of the attack, fled to a bomb shelter with her family as bombs rained down on Tokyo
The firebombing of Tokyo is often overlooked because of the atomic bombings of Hiroshima and Nagasaki five months later, in August 1945
Shizuko Nishio's young cousin was one of at least 80,000 people killed in the bombing