America is a world leader, but we should not be its policeman or ATM.

As a world leader, America must be prepared to confront any challenge.

I'm not sure how a world leader reacts to the work of a clown.

During the Clinton administration, America's image was that of a strong, confident and kind world leader.

The British security industry has the capacity to be a world leader and it should be our shared objective to achieve this.

Australia is already a world leader in dementia research, treatment and care.