Why did US hesitate in killing bomber who killed Marines?

 Red States:

Bombshell Report Claims US Knew About Kabul Bomber, Had Drone Lock, but Didn't Take the Shot

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 This goes along with a piece we ran previously about a report stating that our intelligence community knew when and where it was likely to occur.

The report of intelligence communications indicated that the U.S. knew generally where and when the attack would occur at the Kabul airport, even that the gate where the attack occurred — the Abbey Gate was at “highest risk.”

How do we know this report likely is true? Pentagon spokesperson John Kirby refused to talk about it and railed against leaking intelligence.

But Pardo-Maurer went further in his interview. He said not only did they know where and when it would happen, but that they had a Predator drone lock on the bomber, but that “they” refused to grant permission to take the guy out. “[Permission] was requested and was denied,” he said. Why? “Because we are in this process of negotiating with the Taliban who aren’t even in control of their own government or their own people.”

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That looks like a poor decision by some people who were trying to cut a deal with terrorists like the Taliban. It was definitely a costly decision.  We should find out exactly who made it.