You'd have to know the country and the people in it.

They know the country and are able to catch him.

The country was at the time well known for its poor road standards.

He knew the country they were riding over very well.

It's not just that he knows the country in a way neither of you ever will.

"Your boy isn't the only one who knows the country."

Jake knew the country and could be a big help.

He didn't know the country and was up against some tough Indians who did.

Howard knew the country and had lived there long enough to know the people.

But no country is known to be using it except Iran.