It is a challenge that deeply unsettles many Americans.

The incident deeply unsettles Ellen, who digs up an old UPenn yearbook, where she finds a picture of Jonathan, confirming that he looks identical to Jay.

The prospect of an emboldened Iran deeply unsettles them at a time when the West is trying to persuade Iran to give up its presumed nuclear ambitions.

"That could unleash some forces that would deeply unsettle the whole Episcopal Church," he said.

The British conquest deeply unsettled many Sinhalese, who had long held the view that only the tooth relic custodians had the right to rule the land.

Widespread rioting over food and housing shortages last year in Meshed and other cities deeply unsettled the Government, leading officials to fill shops quickly with imported food and appliances, while executing the "thugs and monarchists" responsible for the disturbances.

"The idea was, look, if the Victorians can do something that deeply unsettles kids, I should be able to do that, too," he told me recently.

The emergence of McCarthyism deeply unsettled the campus.

Jeanette's behavior deeply unsettles me, causes black thoughts to form and expand in my head.

Or, can certain kinds of threats deeply unsettle a worldly population?