I am more than happy to enlighten you: http://www.foroporlapaz.org/Principios.sca?id=5 However, the way you frame the issue is very problematic. Months before the Forum occured, there were many meetings of the international committee participating in the organization of the Forum. After much work a consensus document was created that that defined the political framework of the Forum. On the basis of this document, the Israeli delegation was designed and the speakers for the various plenaries were selected. The Reference Document set the structure of the Forum. It may well be that certain organizations thought the document problematic, and wouldn't agree to sign. That is their right. They should have then opted out. Instead they got the Spanish government to put pressure on the Forum organizers to undemocratically change the whole structure of the Forum. They were under no obligation to come, and if they decided to come, they should play by the agreed rules.
Firebomb thrown during demonstration in northern Israeli town of Umm al Fahm (Haaretz)
from the article: Planned Madrid peace gathering collapses before even taking off