Baron von Clausewitz, a nineteenth century military strategist, characterized the tightness of this connection by saying that war was politics carried on by other means. But it would have been just as accurate to say the reverse was true. New practices need to be developed to deal with these new contexts in which war cannot be carried on at all. An analogy may help drive the point home. Our Anglo-Saxon legal system of two party advocacy is structured around courts which have police at their disposal.
Judges can command armed officer to enforce decisions.
An easy way to see the significance of this is to simply try supposing that there were no police. Suppose judges had no one to send off to force people to submit to giving testimony, undergoing arrest, paying fines, or enduring imprisonment. The whole practice of law would have to be radically restructured. This is something like the situation in which nations are coming to find themselves. It is a situation that traditional diplomacy was not designed to cope with and is unable to deal with effectively.