In terms of electoral statistics, they were the party's most successful leaders.

He is at best but the successful leader of a party.

He was a member of a small group of very successful military leaders in the region.

Even successful corporate leaders "don't have the same feeling of challenge and satisfaction."

He became a successful military leader, and the king gave his daughter in marriage to him.

"I came away with a whole new understanding of what it meant to be a successful leader," she said.

He is, after all, the most successful leader his party has ever had.

But Obama, like any successful leader, has to master the politics of how to get elected.

Someone once said that successful leaders have the courage to take action where others hesitate.

Like many successful leaders, he had a vision and a wealthy patron.