What kind of threat to his career had they used to get him to invite me back?

You know a lot better than I how to counter that kind of threat.

"What kind of threat could do that to a person?"

Perhaps they didn't see me as any kind of threat.

He's been vulnerable to that kind of threat for years.

"But what kind of threat could make her say that?"

Sept. 11 was about a very new kind of threat.

The problem was, she had no idea what kind of threat he posed.

It's not as if he's ever been any kind of threat.

She hadn't realized what kind of threat they had been under.