David Kilcullen, one of the world’s leading authorities on counter-insurgency and an adviser to the British government as well as the US state department, said Obama’s delay in reaching a decision over extra troops had been “messy”. He said it not only worried US allies but created uncertainty the Taliban could exploit.

Speaking in an interview with the Guardian, he compared the president to someone “pontificating” over whether to send enough firefighters into a burning building to put a fire out…

“It feels to me that all these options are dangerously close to the middle ground and we have to consider whether the middle ground is a good place to be. The middle ground is a good place on domestic issues, but not on strategy. You either commit to D-Day and invade the continent or you get Suez. Half-measures end up with Suez. Do it or not do it.”