It extends even before that actually. From its inception Hamas has regularly offered the
hudna, which is the Islamic equivalent of a treaty, effectively a time period in which they would cease all hostilities. Up to 30 years was offered; Israel dismissed all of them, claiming it was a tactical ploy to allow consolidation of their forces (which seems a confusion with a
tahdi'ah).
The interesting thing was that they offered recognition of the state of Israel in return for:
1. withdrawal of troops from the West Bank and Gaza
2. evacuation of all illegal settlements from West Bank and Gaza
3. release of all Palestinian prisoners;
4. the recognition of the right of self-determination for Palestinians
Offered well into 2006 which I think also included the right of return when Rantissi offered it but it was rejected every time.
Now the
hudna for centuries has been an instrument in achieving
suhl or "resolution" and contrary to the
tahdi'ah it is not aimed at recovering to start war again.
So, it's interesting. I think if we insist Hamas are a bunch of religious zealots then this is at the forefront of their thinking: "And be true to your bond with God whenever you bind yourselves by
a pledge, and do not break your oaths after having confirmed them and having called upon
God to be witness to your good faith” (Quran 16:91).
Either they're religious zealots and their word is binding or they're not religious zealots and therefore can be reasoned with. I think it's neither and it's simply more complex than we like to believe or can grasp with the limited information we receive from the other side of the conflict. But in the end I don't think it's a coincidence the IDF has breached more ceasefires than the other way around.