Behind the constitutional crisis lurks a threat of civil war.

No threat lurked in the first section of that passage.

The threat of violence is always lurking.

If the threat still lurked nearby, he needed to know.

Some nameless threat lurked just around the corner of the world for the sun to rise again.

That threat lurked in every dark corner of her mind.

After a while I began to feel lucky to be out of the house, where so many unseen threats apparently lurk.

The request had no force of law, although a threat of formal sanctions lurked in the background.

The threat of terrorism and the potential for war with Iraq, meanwhile, lurk in the background.

Yet he couldn't shake the uneasy feeling that an unseen threat lurked in the shadows.