As for a reaction to the actual news, I can only really suggest that it does rather confirm what Jonathan Freedland wrote a few weeks back, which I linked to at the time. The interesting paragraph was:
Israel has failed to learn these last 40 years [that] if you refuse to deal with a group because it's too extreme, you don't get to deal with a more pliant, moderate alternative. On the contrary, you eventually confront a force that is even more extreme. It happened when Fatah was eclipsed by Hamas - and it could happen again.Freedland's original suggestion was that we might see al-Qaeda becoming a more serious force in the region, but his point still arguably stands if instead Hamas harden their position to stop themselves being pushed out.