In keeping with a long history of official ceremonial, the Queen's funeral

Royalty, leaders of state, and dignitaries from throughout the world will attend Queen Elizabeth II's state funeral at Westminster Abbey in London.

The event, according to the London Police Department, will need the largest security operation they have ever carried out.

But how will other international leaders' funerals measure up to that of Britain's longest-reigning head of state?

Mahatma Gan....