President Obama says U.S. `` absolutely not '' giving Israel go-ahead to attack Iran . Israel is concerned about Israel 's nuclear ambitions . Vice President Biden on Monday appeared to leave door open for Israel to attack Iran . U.S. needs to find way not to `` create major conflict in Gulf , '' Biden says .
President Obama says U.S. `` absolutely not '' giving Israel go-ahead to attack Iran . Israel is concerned about Iran 's nuclear ambitions . Vice President Biden on Sunday appeared to leave door open for Israel to attack Iran . Israel needs to find way not to `` create major conflict in the Middle East , '' Obama says .