When in unclaimed territory we can't access the item shop (message says must be in friendly territory).
First pic shows just outside enemy border (red -- enemy city is to the up/left) and shop is not accessible:

Next pic I moved due 'up' 1 tile, inside enemy borders, and the item shop icon in the lower left is lit and the shop is accessible:

Should enemy territory be considered 'friendly' for purposes of accessing the item shop?
Note my nearest territory is a ways to the left and I don't think I'd be inside it if there was no enemy city here (near as I can tell anyways...)