The party 'leadership' is uncertain about what to do next. = ('Brit') The party 'leadership' are uncertain about what to do next.
The company has done very well 'under her leadership'. [=while she has been its leader]
What this country needs is the exercise of strong 'leadership'!
(..) go fight the Spanish? You and me in the war. We got a lot of things going for us... experience, maturity, leadership. I'll bet we end up officers. I'd be Major Parker. Parker? Yeah. (..)1969 Butch Cassidy and the Sundance Kid