Israel originally did not intend to create a Palestinian state. Until the first intifada the Israeli goal was to continue the occupation with at most an autonomy. The Hamas Intifada (when military Hamas was born) brought Israel to Oslo. But then Netanyahu won (1966) and Oslo turned dead. Under the Barak interim, Arafat proved a tough negotiator (but Arafat was not Hamas). When Likud returned to power (under Sharon), and with the Hamas 2nd intifada, Sharon eventually left Gaza (so it would be easier for him to hold onto the West Bank. Hamas continued resistance induced Bush and eventually Israel=Olmert and Netanyahu to accept a Palestinian state. So why blame Hamas for their winning strategy? Instead, Israel should look at itself with disgust.
Four Libyan soldiers said killed in battle with Islamists in Benghazi (Reuters)
from the article: Hamas official: Palestinians should fire at Israel from West Bank