Possible Clues:

• What breaks a camel's back
• One blow too many for former foreign secretary
• Camel back breaker
• ''It is the . . . . . . . . . That breaks the camel's back''
• Downfall of the laden camel
• This could make even stalwarts crack up
• That which broke the camel's back?
• Final provocation
• Final blow upset stalwarts
• Not much in the end, but a breaker