One of my teachers, a former chief of Israeli military intelligence, used to say that going to war is not like asking a girl out on a date. It is a very serious decision, to be made on the basis of carefully crafted answers to even more carefully crafted questions.
A doubly important article from Martin van Creveld — chiefly about bombing Iran, but with some useful dating advice on the side.
Creveld's Rise and Decline of the State is something a classic and well worth picking up, though I find Creveld better on the differences between the modern state and older forms of political organization than on the supposed decline of state now underway. The state is certainly changing, and new transnational and sub-national institutions and habits are growing, but taxes, bureaucracy, police powers, and, in the U.S. at least, militarism are still at historically extraordinary levels, and even with the rise of the European Union and international trade organizations, most of those powers still reside — both immediately and ultimately — with the state.