[This is a big deal.]
Not that big a deal. The idea of an accidental war is a canard. It happens only when both sides want it. That’s because a war is an expensive and complicated undertaking. Money has to be appropriated, supplies ordered, manufactured and stockpiled, and troops have to be drafted, trained and sent to the front, where they have to be resupplied on a regular basis if they are not to be overrun.