Joseph, the Torah assumes that a normal person will fight for what is his. That is why there is the din of haba b’machteret.
Really the best solution all around is to establish an international resettlement fund to help Arabs emigrate to countries that need immigrants (Germany, for example, still has nearly 700K unfilled jobs). Polls have consistently shown that most as many as 68% in
Judea- Samaria and 80% in Gaza would leave if they could (BTW, one can now take various American exams world-wide by computer – and there is a center in Ramallah). However, it would probably take a major upheaval to get the international community to do it – although some Israeli pols are starting to talk about it..