Never mind, I know other adequate ways to put up the only final defense against the third degree.

"The only defense she hasn't seen is the one that can stop her."

The only defense is using the same means of psychological warfare.

If things went badly, those could be his only defense.

The only defense you have is his lack of intent.

"The only defense is to put out good, original magazines."

The only defense she had left was to make him understand.

Her only defense was to stay in close and keep his blade busy.

But it might be her only defense against the darkness.

The Dragon had been her only defense, and now it was gone.