Farah somehow assumes that there is a choice about whether or not there can be a Palestinian state. There isn't. There are too many Palestinians there. Nobody's going to allow them to be deported, and a long-term Israeli occupation is both too expensive, and too politically damaging. A Palestinian state is a foregone conclusion.
The only remaining question is whether it is possible to guide the de facto Palestinian state into some form of civilized behavior. We have the means, and thus the responsibility, to try to make this happen.