In the past, such small-power wars generally began once the (at least failsafe) support of a larger power was obtained. This always had the risk that the confli

In the past, such small-power wars generally began once the (at least failsafe) support of a larger power was obtained. This always had the risk that the conflict might escalating to a first-power war (such as the first Punic War which was sparked by a tiny-power conflict.) Nowadays, the downside of such escalation is obviously even sharper. The U.S. was never going to chose between Spain and Canada in advance of actual fighting (or Canada and France re similar issues), because the larger nuclear-fueled conflict with Russia made dumping allies overboard foolish; whoever began shooting would have lost. I would argue that the nuclear standoff trickles down.