And when we face unprecedented threats like we're facing, we cannot have business as usual.

If this becomes a reality, then we are faced with an unprecedented threat to our nationhood.

Can this government, can any government, be trusted not to abuse powers that have been expanded to respond to a specific and unprecedented threat?

"At a time when the well-being of children is under unprecedented threat," she writes, "the balance of power is weighted heavily against them."

Despite rapid advances in medicine, disease still poses an unprecedented threat to human life in the 21st century.

Multinational corporations, air travel and the Internet are all posing unprecedented threats to local societies and traditions.

We are in the early stages of an unprecedented threat to the health of the human species.

All governments face the challenge of dealing with the current unprecedented threat of global terrorism.

Furthermore, there is an increasing need for a response from international law to the difficult issues raised by the fight against an unprecedented threat.

Their actions were reprehensible, and if they are not punished severely, could begin an unprecedented threat to to American democracy.