The phrase "a string of leaders" is correct and usable in written English.
It can be used to describe a series or succession of leaders, often in a political or organizational context.
Example: "The organization has seen a string of leaders come and go, each leaving their mark on its direction."
Alternatives: "a succession of leaders" or "a series of leaders".
A string of leaders, including many from the north, have failed to redress such inequalities.
The strategy is just the latest formulated by a string of leaders at AOL, which merged with Time Warner during the Internet boom and then almost immediately started to struggle.
Whereas Ms Merkel toiled away in the shadows, Mr Sarkozy invited press photographers to see him meet a string of leaders, then went for a jog wearing mirror-finish sunglasses and a black T-shirt with the badge of France's toughest police commando unit.
The most visible successes of recent months have been the capture or killing of a string of cartel leaders.
One reason is a string of unimpressive leaders who have offered little to take the place of globalisation.
President Hosni Mubarak of Egypt has received a string of Arab leaders at his summer palace in Alexandria, where Prime Minister Ehud Barak of Israel arrived on Thursday for talks.
A string of EU leaders expressed deep anger in private on the margins of the Brussels summit at Cameron's Euroscepticism.
In Ukraine, a string of European leaders and institutions have threatened a highly unusual boycott to protest the jailing of former Prime Minister Yulia V. Tymoshenko, whose admirers accuse her main political rival, President Viktor F. Yanukovich, of persecuting her.
A string of international leaders have criticized Mr. Assad for making promises like respecting the cease-fire, and then continuing his attempt to put down the uprising by force.
Their vote is rather a Francophone bellow of frustration at the dominance of Dutch-speakers in an increasingly divided country.Unexpectedly, Charlemagne has been reminded of these frustrated voters in the past few days, as a string of European Union leaders have declared that a "two-speed Europe" is at hand.
It was the supporters of Mr. Forrester who struck the harshest notes at a news conference at the State House this morning, when the Forrester campaign lined up a string of Republican leaders to deliver bite-sized assessments claiming their man's victory and Mr. Lautenberg's defeat.
