In its harshest condemnation of Israel since last summer's war, Human Rights Watch charged that most of the Lebanese civilian casualties came from "indiscriminate Israeli air-strikes," according to a report to be released Thursday.In a statement issued before the report's release, the human rights organization said there was no basis to the Israeli claim that civilian casualties resulted from Hezbollah guerrillas using civilians as shields. Israel has said it attacked civilian areas because Hezbollah set up rocket launchers in villages and towns.