This Question - What can the rest of the World do to stop Israel-Palestine war? - does not have a real answer.
It is calling for speculation about what we could do to solve the problem. Of course as with most conflicts there are at least 2 different sides and the definition of resolve is completely different depending on what side you are on. On top of that there are probably hundreds of potential solutions that could end it.
I think a question asking what plans have been proposed that have a potential for being found acceptable by both sides would definitely be on topic. There have been in the past questions that have asked about possible future events and what might be done. Again asking for proposals that have been put forth as a way to deal with these problems is probably on topic, but asking for original ideas on how to solve the problem seems like our version of the Gorilla vs Shark Question.
So should these types of questions be considered on topic?