Updated

American forces made one of their most effective hits against ISIS on November 15, when U.S. planes destroyed 116 tanker trucks used by the terrorist organization to transport the stolen oil that is its financial lifeblood.

American A-10 and C-130 warplanes targeted a group of about 300 trucks near Abu Kamal, in Syria. Given that ISIS is thought to have just over 1,000 trucks in its entire fleet, the group of 300 represented a huge target for U.S. planes.

At a Pentagon news conference last Wednesday, reporters wanted to know why American forces did not take out more than 116 trucks. Why not all 300, or something close to that? A U.S. official said the American attackers simply ran out of ammunition.

"There were 300, I think, to begin with, and then you hit 116. Why didn't you go back?" a reporter asked Operation Inherent Resolve spokesman Col. Steve Warren.

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