Organ donation is NOT always against Jewish law (Halacha). In fact there is almost always a way that it is totally fine and even further, there are interpretations that suggest that not being an organ donor is a violation of Halacha! Please see http://hods.org/ for a very good observant Jewish organization that seeks to make more orthodox Jews organ donors.
Since when is Palestine a state? And for that matter, it is not Palestine with whom Israel is waging war. Israel is attacking Hamas terrorists. Not civilians. Not the Palestinian Authority. Not Fatah.