There is more than a game of conquest to give more of a sense of geo-politics. Coups, elections putting governments hostile and face the consequences in the meter of the alliance. Deal with it without having to send the Defcon to 3rd world war. Events like Nam, Cuba, and those colonies independence. Less army to get micro theater. Looking forward strategic transport and be able to concentrate on one or two positions and the establishment of theaters and other battle zones.
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