Sometimes their actions threaten important American interests from foreign policy to public safety.

What would happen when some action of theirs threatened to change the nature of their own reality?

Yukos officials said the action threatened to shut the company.

"Your actions have threatened all life on earth," Leonard spoke.

Adding that such actions threaten the unity and integrity of the country.

They, and the president, seem oblivious to the way those actions threaten national unity.

Any word or action too extreme would threaten their very existence, and Gurney simply won't have it.

Executives in public television and radio have said his actions threatened their editorial independence.

This action would threaten Serbia's one asset, its powerful armed forces.

Threatened an even bigger scandal if I took any action against the nurse.