Unified Palestine?

Palestinians look like they are moving toward a unified government, with Hamas and Fatah playing nice. 

Until now, the efforts have gone nowhere, because Mr. Abbas - who heads the Fatah faction - has insisted that any new government accept commitments made by previous Palestinian governments, such as recognizing Israel, renouncing violence and accepting peace agreements signed by Israel and the Palestinians. These are issues that Hamas has refused to accept.

Abbas has wanted a unified government and reduced Hamas control, or a change in their stance toward Israel, in order to try and re-qualify for loans from Europe that they’ve been living without for a while now.  One of the main reasons that the loans were discontinued was that the Hamas government didn’t recognize Israel and wouldn’t renounce violence. (Note:  I guess that’s two reasons)

They’re not really saying in this article why the parties are now moving toward unity, and there’s no indication that Hamas is giving in on the Israel recognition, so what gives?  Hamas and Fatah live in a state of constant tension with each other, so I wonder how long it will be before they are back at each other’s throats.