"The Marines have landed and the situation is under control." This kind of headline was very common in the 1930s, when the USA had a habit of intervening with tedious regularity in the territory of small states in Central America. Now history seems to be repeating itself - but with a difference. The marines referred to here are, of course, American. While the US marine corps is grabbing the headlines of the world press, a couple of hundred British marines are kicking their heels on the outskirts of Bagram airstrip, while a couple of thousand of their comrades are kept hanging around on army bases in Britain, unloved and unwanted, while Tony Blair fumes in impotent humiliation.