Italy is NOT at war with UK
Italy has declared war on the UK
Some of the territory in Yugo somehow has become UK territory. No UK troops ever involved.
Net result - Italian units cannot move in the "UK territory" nor attack the Yugo in "UK territory".
As a side note, in the same situation, Germany never declared war on Yugo, but can move units into any hexes taken by Italy, even thought Italy is not at war with any countries at war with Germany.
