You seem to be either advocating ethnic cleansing or for two of the world's most ardent enemies to live along side one another. Both are unthinkable. Wake up.
The problem in Gaza is that the people are oppressed and don't dare question Hamas. The keep their heads down and try and get through the day, and who could blame them. Until Gaza is a proper democracy and the people have real freedom of speech, they can't make political progress.
As for Obama, the American government is forced to appease the Evangelists and American Jews, just as the Israeli government is forced to appease certain groups. Any President would have his hands tied in the same way.
However, I totally agree with your criticism that Israel has violated numerous UN resolutions. It is unacceptable. I also think the veto option for the permanent members of the Security Council is a major hurdle for peace in this conflict and a whole range of others. The way Russia and China have blocked so many resolutions in regards to the present Syrian Civil War, is not all that different to what the US has done for years in regards to Israel.