DELCORSO'S GALLERY by Philip Caputo; Holt, Rinehart &
Winston; 352 pages; $15.95
The home office of International Press Service is clamoring for a "roser." It is, the Beirut bureau chief explains, "the radio equivalent of bang-bang, an on-scene report, the purpose of which is to give our listening audience a few thrills while they're driving home on the expressway." But the old pro has had it; his competitive edge is dull from too many wars, too many silly requests and perfunctory atta-boys on the wire. Besides, the Lebanese capital in the mid-'70s is the most...