But I find it impossible to justify what is quite obviously a politically motivated rejection.
I still believe this is Apple's store, and they can admit and reject what they like. But if politics comes into it, than that changes my personal perspective on buying Apple products.
Just imagine if the subject would be "places that legalize gay marriage" instead of drone strikes. The only "objectionable" part of the drone strike app is that it may have a political agenda. That should never be grounds for rejection.