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Rebirth v1.30: Upkeep Missions video.
Rebirth v2.00: can guide is here.
Rebirth v2.50: Diplomatic Aid missions are explained in this video.
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Rebirth v1.30: Upkeep Missions video.
Rebirth v2.00: can guide is here.
Rebirth v2.50: Diplomatic Aid missions are explained in this video.
...