You must already be at war to conduct a convoy raid. The raid occurs during the collect income phase of the nation that is being raided. In rare cases, say for example the axis control Normandy and the allies control Spain, and both the UK and germans have a sub in SZ 105 during the collect income phase of the owners of the territories, they would both suffer the income loss.
And what happens if let’s say Germany owns Normany and Italy owns Spain? There is one UK sub in SZ 105. Who loses the 2 IPC income? Or do they both lose it, in which case one sub delivers 2x2 IPC damage…… :?
Both lose it on their turn
