Iran and the Wrong Allies in Syria

Tom Rogan puts the US national interest the other way from Pat Buchanan.
"Only last week, an alliance of Salafi-nationalist rebels began a campaign to challenge ISIS and its affiliate allies. Their rejection of unrestrained extremism is heartening — it speaks to the popular fury that ISIS’s havoc has induced. At the same time, the Free Syrian Army is showing tentative signs of revival.
However, were the United States to ally with Iran, we’d be opening the door to their hardliners’ broader scheming. If we loosen up on Iranian Revolutionary Guard and Iranian-intelligence officers, those individuals would almost certainly use that space to harass the more moderate rebel columns. In essence, Iran would use the U.S. as a force multiplier — enabling their greater support of Assad’s regime."