High-level U.S. and Soviet officials met in Paris on defusing tensions in southern Africa, but disclosed nothing about the discussions. “There was an exchange of views, but there will be no statement or communique,” a U.S. Embassy spokeswoman said. Chester A. Crocker, assistant secretary of state for African affairs, headed the American delegation while Vladilen M. Vasev, an African specialist, led the Soviet team. The Paris meeting was one of a series of talks on regional issues. The two superpowers are expected to meet next month on Afghanistan.