Obtaining results
An example of what could have been achieved: (Kennedy got the missiles out of Cuba but one of the conditions was that the US withdrew its weapons from Turkey...While politically very unlikely, it was done discreetly and several months later (so as not to associate both parts of the deal).
This way of doing diplomacy could have worked too: ok for the return of the exiled palestinians, but starting later and without fanfare. Children of exiled palestinians have citizenships in other countries, so it would be hard for them to claim Palestinian citizenship.
If there is peace between Israel and Palestine and Israel refuses immigration of non jewish exiled (for fear of loosing jewish influence), then is it a true democracy?