Why an isolated Franco-Italian war would not stay isolated

What would a war between France and Italy in the 1920s look like if other powers stayed out?

France still could not ignore other powers, because its worldwide colonies remained exposed while its fleet concentrated against Italy in the Mediterranean.

The answer challenges the assumption that France could disregard other powers simply because they remained formally outside the war. Italy's principal naval commitments were concentrated around the Mediterranean, while France's empire imposed more widely dispersed demands. A possible intervention or an opportunistic appearance near a distant colony could still require French attention. In that scenario, concentrating against Italy would carry costs elsewhere even before another state entered the fighting.