Is Iran the United States' new best friend in the Middle East?

``... while the US and Iran "quietly continue to pursue their often conflicting interests, they are being drawn together by their mutual opposition to an international movement of young Sunni fighters, who with their pickup trucks and Kalashnikovs are raising the black flag of Al Qaeda along sectarian fault lines in Syria, Lebanon, Iraq, Afghanistan and Yemen.... With Iran as an island of stability in a region plagued by violent protests, sectarian clashes and suicide bombers, there are not that many options left for Washington, experts here say.''