Until the last hour, the U.S. had hoped to win Argentina and Brazil to its side against Castro, but Latin America's two biggest nations would not come around at Punta del Este. Last week in their home bailiwicks, Brazil's and Argentina's leaders had some explaining to do. In Brazil, Foreign Minister San Thiago Dantas went before an angry Parliament to explain his stand. Skillfully dividing and goading the Deputies into ineffectual quarreling, he escaped uncensured. In Argentina, President
Arturo Frondizi, who had also balked at voting Castro out of the hemisphere, ran into an ultimatum from his country's powerful...