In no way do I give credit to the watchtower that they would actually know, by devine or demonic voice, the script of future events. Just that they predict armageddon and a peaceful time afterwards is not such a shocking thing. Its not a diffcult task to predict an ending of these times. And for fairytale values they give a paradise as a reward, or comfort for those that survive. Considering that the watchtower was formed in a time were insecurity, fear, doubt ruled in society's mind it's no wonder they formed the story of jehovah and his so called plan ... and its no wonder the watchtower became a success too.
About the maniacs .. well, there are examples enough of those and what their crazy minds come up with often sounds fantastical. Its just though luck for the sane people ridiculing them - when some things come true ...
And as for current relation between Arabs, Christians and Jews... Christianity and Arabs have been on knife end with eachother since the middle ages. And that certainly would have ruined the relationship a bit. The jews, having migrated all around the globe since forever, have had communities in the western and arab world also since forever. They have had this underdog stigma and my view is they will never loose it and some probably love the marters role a little too much. But my historical knowledge is too rusty to give a beautiful respons on this.
And to quote one cute elderly lady in New York (while asked by CNN what she thought about current and futur events) I don't care what happens anymore, it's such a disaster anyways