WordNet
bunker mentality
n. defensiveness resulting from repeated attacks; "after so many suicide bombings the Israelis have to resist developing a bunker mentality"
Usage examples of "bunker mentality".
Had Ruff adopted a bunker mentality and refused to see the situation as it really was?
He was unhappily aware that he was retreating into a bunker mentality, hunkering down as the entire galaxy prepared to come crashing down on his head.
The CIA had been in bunker mentality for years, it was CYA up the wazoo over at Langley.