The task-oriented leader who gets things accomplished proves to be the most successful.

The two leaders of the new group proved that they didn't have enough political pull.

The leader proved to be the manager of a nearby steak house.

"In moments of turbulence, military leaders have always proved to be strong leaders."

And the Bulgarian leader proved a handful, winning his team one of three penalties.

Its leaders have proven overly optimistic about their ability to raise money, all of which must come from private sources.

But Chinese leaders have been resisting such calls for more than two years, and may prove just as intransigent now, the economists warned.

Some leaders are indeed proving exceptionally creative in eliminating their political opponents and getting round the democratic rules of the game.

When Mexico's leaders proved less than cooperative, we arranged for a change in government.

None of the principals here, nor the leaders they represent, is proving to be that kind of person.