I said he was one of the commanders of a guerilla army committed to the destruction of a country he now is Deputy Prime Minister of. If he is no longer a member of the Army Council (he denies ever being so, with as much believability as Clinton's denial that he did not inhale pot) it is because the political role he was playing became more important, and military activity was jeopardizing that work. Sinn Fein still seek a united Ireland, but are trying to accomplish it through political means.

This is the power of dialogue. You talk, you talk, you keep talking. You deal with the less extreme popular factions (analogy: https://en.wikipedia.org/wiki/SDLP), but the key word in that sentence is popular: an agreement with an organization with no backing in the community is an agreement with no-one. You do NOT commit to something and then completely disregard it, because then your word becomes worthless, and no-one believes anything you say ever again.

I do not know the solution. No-one does. But attempting to push the Palestinians into the sea is not it.