@Volunteer,
"Fatah and Hamas are two sides of the same coin like the Irish Republican Army (IRA) and Sinn Fein. They work together to achieve their common aims."
I think it's ironic that you compare the Israeli conflict to the N Ireland conflict. I too think the conflicts are very similar. They're both land disputes by different religious/ethnic groups that have a history of bad blood. In N Ireland, the Protestants and the English government tried to end the conflict by addressing the legitimate grievances of the Catholics. They created a unity government, integrated Catholics into the police force, etc. And for the most part they succeeded. Who today would argue that N Ireland would be better without the peace process?
If the Protestants had simply denounced Catholic terrorism, would it have achieved the same results? Of course not. And yet, when it comes to the Palestinian conflict, there's no lack of ppl like you who simply denounce Palestinian terrorism, and seem to think that nothing more needs to be done. It's so simplistic, but more than anything, it's impractical. You can achieve nothing until you address the other side's legitimate grievances.
But to get to your argument that Fatah and Hamas work together, what world have you been living in? The two have been at war. They're bitter rivals engaged in a power struggle.
You could say that the two work together in the sense that Hamas' terrorism gives an incentive for Israel to negotiate with Fatah. Without it, Israel could take Palestinian land without suffering any adverse consequences. However, you could just as easily say that Hamas and the Israeli right work together to sabotage the peace process. What Hamas does sometimes furthers Fatah's interests, but sometimes it does not.