Nationalism - in other words, the dividing of the church into bodies - consisting of such and such a nation, is a novelty, not above three centuries old, although many dear children of God are found dwelling in it.
Clearly, some creative thinking is badly needed if humans are to have a future beyond Earth. Returning to the Moon may be worthy and attainable, but it fails to capture the public's imagination. What does get people excited is the prospect of a mission to Mars.
It's always difficult to play a scene of physical violence because you're always afraid that you don't know your own strength and might hurt someone.

