vicious circle
vicious cycle

At some point now we must break the vicious circle.

If we take it back to the family, a vicious circle is involved.

"There is a vicious circle from which one can see no way out."

The problem is it's become a bit of a vicious circle.

It is a vicious circle which we need to break.

We must find some way to break this vicious circle.

A lower population growth is the only way to break through this vicious circle.

It was a vicious circle that kept playing inside my head.

Could the Council do something to put an end to this vicious circle?

So you can see that the last, this is a vicious circle.