After undertaking another of his famous U-turns on America’s use of British bases, I fear the prime minister will be swayed by the same arguments to take us into the war, says John McDonnell W e know from our experience of the wars in Iraq, Afghanistan and Libya that it is relatively easy for politicians to decide to unleash upon a country and its people large scale firepower and, tragically, we know the nightmare that follows and the human suffering caused. The most difficult part of the war