PARIS

BERNARD-HENRI LÉVY, 62, is such an inescapable figure in France — of mockery, admiration, amusement, envy — that he is by now unembarrassable. Making his mark young as a philosopher, he was satirized neatly by a critic with the words: “God is dead, but my hair is perfect.”

But in the space of roughly two weeks, Mr. Lévy managed to get a fledgling Libyan opposition group a hearing from the president of France and the American secretary of state, a process that has led both countries and NATO into waging war against the forces of the Libyan leader, Col. Muammar el-Qaddafi.

It was Mr. Lévy, by his own still undisputed account, who brought top members of the Libyan opposition — the Interim Transitional National Council — from Benghazi to Paris to meet President Nicolas Sarkozy on March 10, who suggested the unprecedented French recognition of the council as the legitimate government of Libya and who warned Mr. Sarkozy that unless he acted, “there will be a massacre in Benghazi, a bloodbath, and the blood of the people of Benghazi will stain the flag of France.”

Mr. Lévy, a celebrated philosopher, journalist and public intellectual, gives Mr. Sarkozy sole credit for persuading London, Washington and others to support intervention in Libya.