I do understand the situation, but as Mezzanine has outlined the jist of it I will not repeat. There is more to it, but it is impossible to write it down without probably causing this to turn nasty. I will say that there are many envoys who are trying to bring about resolution in the form of a two state agreement. Chilla Hamas being Iranian backed is only a theory, they are actually a Sunni Islamist organisation ( there is more than one kind of Muslim). They are now officially elected but some nations still believe them to be terrorists.
This situation in the middle east has led to the rise of organisations such as Al Qaeda.
The idea behind the state of Israel actually started much earlier than the 2nd world war with the Balfour agreement proposed by us the British ( think it was around 1918)
Chilla Israel is taking so much flak, as if they see Hamas as a terrorist organisation, why have they invaded and begun to kill civilians, and refused journalists entry to Gaza? Also they have huge backing from America, so this means that us and France etc have to be very careful in what we say or do in this situation.
If you want to go deeper into why America is so pro Israel, there are many fundementalist Christian groups over there that belive to put it very simply that God will judge them on how they treat Jews, so they take this to mean they must support Israel whatever action they do. There are also theories that Bush is one such believer, and that contributes to the hatred the Arab world has for him.
It is a very very complex subject, I have read a few books on it, but it is a heavy subject to get your head around.