The movement of "very calculated nonsense" that influenced contemporary art gets a striking exhibition. It is hard to take seriously a group of grown men and women who submit a store-bought urinal to an art show, declaim meaningless sounds as poetry, stage mock trials of novelists they dislike, wear a string with two empty tin cans as a bra, provide an ax for dissatisfied art connoisseurs, call their movement Dada, and then proclaim proudly, "Dada means nothing". Yet these artists of shock from World War I and the 1920s have now been taken seriously enough for the National Gallery of Art to mount a striking and didactic exhibition of their work...

[OPINION] Historians are hailing accused 19th-century spy Alfred Dreyfus as a hero, not a simple victim of anti-Semitism. In 1899, a broken Alfred Dreyfus accepted a presidential pardon — and its implication that he had committed treason against France. It was a matter of life or death, for Dreyfus feared that he would not survive the notorious penal colony on Devil's Island, where he had been sent after a military court convicted him of betraying his country. Those who believed that he was innocent and had called for his exoneration were deeply disappointed. "We were prepared to die for Dreyfus," said poet Charles Péguy, "but Dreyfus was not." His decision to accept a pardon is one of the cornerstones of a long-standing French perception that Dreyfus is the model of a submissive victim. But on the eve of the 100th anniversary of his exoneration in 1906 and the official end of the tumultuous affair that convulsed France for a dozen years, that view may be changing. Indeed, some historians see Dreyfus the patriot, not Dreyfus the victim...

I was applying some last touches to my biography of Kofi Annan on August 10th when I was surprised to read an ad by the Anti-Defamation League on the Op-Ed page of the New York Times. The ad had a simple and stark message. It said: "UN Secretary-General Kofi Annan: How many more Israeli civilians must die before you condemn Hezbollah? And when will you extend condolences to Israeli victims." It was signed by the Anti-Defamation League’s national chair, Barbara B. Balser, and by its national director, Abraham H. Foxman. The accusations were scathing. The source, moreover, was dispiriting for any admirer of the Secretary-General...

George Washington the man, the myths and even the teeth make up the new Mount Vernon experience. The private organization that runs Mount Vernon, the home of George Washington, will soon open an opulent and dramatic visitors complex that will try to fill a need spawned by the growing ignorance of Americans about their own history. There was a time when most visitors came to the 18th century estate and lovely grounds in northern Virginia already full of facts and insights into the life and times of the first president of the United States. But this is no longer so — a lack of knowledge that first attracted notice in the 1990s...

An exhibition highlights the golden age of Mexican printmaking. In the wake of a long revolution against dictatorship, Mexican artists vowed in the 1920s to create works that would instruct and enrich the masses. They even signed a manifesto proclaiming, "We repudiate so-called easel painting and every kind of art favored by ultra-intellectual circles." Out of this mood came the great murals of modern Mexico, especially the monumental works of Diego Rivera, José Clemente Orozco and David Alfaro Siqueiros. But the mood also spawned a lesser-known burst of creativity — an enormous production of prints for 30 years. Unlike paintings that would likely be savored by rich families in their homes, the multiples of these woodcuts, linoleum cuts and lithographs could reach many people...

This is the season for summing up the legacy of Kofi Annan, the UN Secretary-General whose ten-year reign comes to an end on December 31. Just a few weeks ago, I attended a day-long seminar at Georgetown University assessing his "legacy for Africa." The forty scholars, diplomats and civil servants agreed that Africa had benefited from his campaigns against AIDS and poverty, his hectoring against military coups, his championing of peacekeeping missions, and his remarkable doctrine asserting that the UN has the right to trump sovereignty and cross any border to stop a government from abusing its peoples...