This latest of Mr. Gunther's journalistic travelogues takes us into both more and fewer countries than its title suggests. In addition to dealing with the Soviet satellites of Eastern Europe and the Balkans, he includes chapters on Italy, Greece, Turkey, Austria, Germany, with "footnotes" on France, Britain and the east-west impasse. He did not, however, penetrate into the Soviet Union. As usual, Mr. Gunther's book is easy to read and a source of all sorts of facts about the personalities and problems he treats. Those who think an immediate preventive war against the Soviets is called for will find small comfort in his report from the border states.