THE NATIONS: The Big Two

Traditional diplomacy hardly stood a chance last week as the world's two superpowers poked, prodded, and clutched at each other.

While Richard Nixon whistle-stopped his way through the vast expanse of Siberia, the world barely noted the foreign ministers' conference grinding to an inconclusive end in Geneva. In Vienna, young Americans and Russians alike were learning some of the facts of international life at a rowdy, Red-run youth festival. And in their twin expositions—the Soviet in New York and the U.S. in Moscow—the superpowers sought with all the arts of salesmanship and propaganda...