Sentence examples for the most difficult challenge from inspiring English sources

This is perhaps the most difficult challenge we face today.

What is the most difficult challenge you see yourself facing?

The question is, which country has the most difficult challenge?

However, achieving open government is perhaps the most difficult challenge facing the new regime.

What was the most difficult challenge you faced when revising your article?

Perhaps the most difficult challenge will be changing the way bankers behave.

Stigma is perhaps the most difficult challenge in dealing with H.I.V./AIDS in Afghanistan.

"This is the most difficult challenge," she says, shaking her head.

This week, though, they faced perhaps the most difficult challenge yet: heavy metal.

State-sponsored political espionage is perhaps the most difficult challenge the Google team faces.

We've always talked about this being the most difficult challenge of all.