Palestine is preparing to apply for membership in the United Nations in September 2011, and has won the support of 40 countries  If the United States uses its veto power in the Security Council to prevent Palestine from entering the United Nations, it will ignite anti-American sentiment in the entire Arab world
If the United States does not use its veto power, it will offend Israel and make Obama lose some voters who support Israel
The United States will not offend Israel, but it will ignite anti-American sentiment throughout the Arab world.