Outrage over Salman Rushdie’s knighthood threatened to ignite across the Muslim world yesterday. Security around the writer was reviewed by Scotland Yard as an Iranian group placed an _80,000 bounty on his head. The same group accused the Queen of mocking Muslims with the honour. In London, Lord Ahmed, Britain’s first Muslim peer, said he had been appalled by the award to a man he accused of having ‘blood on his hands’. In Pakistan, where effigies of the Queen and 59-year-old Rushdie were burned, a minister appeared to justify suicide bombings as a response to the knighthood.