Here is a link to Yale's translation of the Hamas Charter: http://www.yale.edu/lawweb/avalon/mideast/hamas.htm. Read every word. If you do so and you then try to assert that Israel can reach some sort of "understanding" with Hamas, then you are either stupid or delusional, or possibly both.
There is no way that Israel will ever be able to reach any sort of deal with Hamas. Short of a mass suicide of every single Jew in the country, Hamas will not be satisfied.