Jamie,
You are making two separate arguments here. One religious, the other political and legal.
When you speak as God's representative, and say that "a lesson has not been learned"- the only response I can give you is that if God is behind events- then you are clearly wrong.
As far as 'legal rights', much ink has been spilled over that. There is no getting away from the fact that Israel's existence as a state is legal. In many ways more legal than the existence of the US. It is a historic fact that nearly all countries, and their current borders, are a result of wars and invasions.
Nor can one get around the fact that the 'West Bank' was captured in a defensive war. And the facts remain, despite the common rhetoric, that Israel has made considerable efforts to make peace with the 'Palestinians'- and those efforts have been rejected over and over. It is also a fact that the areas today controlled by the Palestinian Authority were given to them by the Israelis. And Gaza, which was controlled completely by Israel, was given to them as well.