In my thoughts on waging a war between Earth and Pandora, I've turned my thoughts to psychological warfare warfare and propaganda.
It would be relatively easy to attack the Avatar team this way, just get their family and friends in front of a camera and get them to make a recording saying that what they did was wrong (or atleast we need unobtanium) and that they are missed back home. The idea is to either get them to give up without a fight or atleast be more willing to fold during negotiations This will be especially hard on the Avatar drivers that transfered into thier avatar, since they can't go home.
Jake Sully could also be attacked in the same way, while the opening didn't reveal if their parents are alive, you could use Jakes old squad mates instead, from when he was in the marines. Get them to repeat the same thing again. The secret to this is to be subtle, not so in your face that they turn off without watching it.
Using psychological warfare against the Na'vi is more difficult as you lack the mental tools to get into their mind. Probadly your best method of attack would be to try and undermine their respect for Jake Sully. This is suprisingly easy, just dig out the old recordings of Jake's marine squad and link them throught camera work with the actions of SpecOps. While this probadly won't make the Na'vi reject Jake, it might sow the seeds of doubt in their minds. Could Jake do the things that SpecOps did to us?
A wider attack on the Na'vi should try and either to get them to give up or try and appeal to their compassion so that they come to an agreement with us. The first option is simple, create a video tape of mankinds most destructive weapons, its most brutal wars, and its sacrifice to try and show the Na'vi that we will not give up unobtainium and that we can do even worse to them than what RDA did. This of course runs the massive risk of backfiring and making the Na'vi believe that we are beyond redemption and must be fought to the end.
The compassion option is again a video tape of the best parts of humanity, arts, music, literature, film and such concepts as love, charity and conservation of the environment. But as we are trying to connect with the Na'vi, we will also cut up hundred year old copies of National Geographic and pretend it shows the world of 2154. Sure if Jake or any of the Avatars see it they'll know its a lie, but it still shows to the Na'vi that we where once like them.
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