President Barack Obama on Thursday rejected what he called an effort to isolate Israel at the United Nations in September.

　　In a Middle East speech, Obama went further than he has in the past in laying out the parameters of an agreement between Israel and the Palestinians, but stopped short of laying out a formal U.S. peace plan.

　　He said any agreement creating a state of Palestine must be based on a 1967 lines with mutually agreed swaps. He said the U.S. commitment to Israel's security is unshakeable.

　　"For the Palestinians, efforts to delegitimize Israel will end in failure. Symbolic actions to isolate Israel at the United Nations in September won't create an independent state," he said.