[konaice]

Let me get this right, our FBI entrapped these men by threatening the death of a colleague? Nobility and loyalty illegal?

You need to re-read. Nobody was threatned.

[tsomer]

No need to reread, need to rephrase: these men were warned, falsely, of the impending deaths of colleagues.
They passed this warning to some acquaintance, hoping to save their lives.

This is what the FBI construes as espionage?