If you want to start this, I'm with you, and I can tell you how to do it.
1.
Take Stock of Resources. We have the strongest tool right here and now: people who care. Plus, we have access to the most powerful method of combating ignorance: the information super-highway.
2.
Using Resources. This, harder... volunteer help is hard to come by. Need a name, feel free to suggest. Need a support... which is REALLY easy, just setting up an internet forum board like this one would be about half the battle. I've done PR work on several occasions, it's not hard, if someone can do the HTML stuff for me. Not to mention language support.
3.
Expanding Base The hard part. If this is to be international, it needs international spread. This forum board would be a good place to start, as would anything else. People who are intelligent, articulate, and as multi-lingual as possible... collecting propoganda from every country, to show how rediculous they all are... and so forth.
4.
Networking And doing it smart. There are multiple organizations that are assets that could be invaluable. My priority would be "Doctors Without Borders". They're the largest, most respected, international humanitarian/charity organization.
5.
Time Because, something like this, will take decades to reverse anything. The trick is operating fast enough, well enough, soon enough, to slow down the escalating tensions. Buying the time, the breathing room, to do long term good.
Everything else, just details. And patience. And more details. And more patience. And a lot of hard work.