George Robertson warns defence investment plan fails to meet scale of challenge facing the UK The former Nato chief who led the government’s defence review has criticised the prime minister’s plan to pay for it, calling the defence investment plan (Dip) insufficient and overly delayed. George Robertson, the former Nato general secretary, told MPs on Tuesday that the Dip had damaged confidence in the defence industry and among Britain’s allies who are gathering in Ankara this week for the Nato su