I’m not going to shed any tears for Al Nusra being hit with missile attacks.

Washington (CNN) – The Syrian regime this week fired at least two Iranian-made, short-range ballistic missiles in what appears to be an effort to more precisely target Syrian rebels, two U.S. military officials tell CNN.

The Fateh A-110 missiles are more accurate than the older Scud variants that Syrian government forces have used in recent weeks.

The U.S. military officials declined to be identified because of the sensitive nature of the information. The Iranian government has not commented on the issue.

The Fateh trades range for accuracy. It can travel about 125 miles, while the Scud can go about 185 miles. But the Fateh has a “circular error probable” or — CEP — of 330 feet, while the Scud’s CEP is 1,480 feet. CEP is defined as the radius of a circle in which half of a missile’s lethal payload falls and is the standard measure of a missile’s accuracy.