Apparently the US Department of DefenseWar thinks that they can order non-US citizens not resident in the USA to cease and desist from mailing things.
Uh…
Hilarity of the items involved aside, the gall of the US military postal service to give orders to civilians not under their command and not even of their nation is shocking.
In some fairness it sounds like the Kingdom of Bahrain are the weird ones here. But still, it sounds like all other arguments aside, she has no way of knowing if a soldier is any particular place. So asking her to stop sending to soldiers in that region is kind of pointless.