It was sent to America's military high command in May, during a time when relations were febrile following the killing in Pakistan by American special forces of Osama bin Laden.

ECONOMIST: Pakistan is forced to find a new ambassador to Washington

But in the afterglow of victory, many in the Israeli military high command were more focused on renovating their quarters, and the soldiers who were assigned to the Sinai were improving their fishing skills on the Suez Canal.

FORBES: The Ghost Of Yom Kippur, Israel's Pearl Harbor

Exactly when and why the Luftwaffe High Command decided to switch from these nuisance raids to conventional bombing raids on cultural centres of no military value is difficult to determine, but on 23 April, twenty-five German bombers attacked Exeter, using radar beams as a guide.

BBC: Blitzed by guidebook