Not the formal debate format, but in effect a debate on the merits and possibilities of Star Wars--a/k/a SDI, a/k/a High Frontier--against the background of reports from Geneva that Mikhail Gorbachev had proposed a 50 per cent reduction in Soviet weapons in return for the United States' stopping work on a defense system. There are fireworks here--especially between Messrs. Kendall and Jastrow--but also solid information on this complex but crucial topic. HK: "We have no way of building a defense which cannot be punched through by a determined enemy." RJ: "The Soviet Union now has running, full time, four ICBM production lines--the SS-18, -19, -24, and -25. The -24 and -25 are mobile. They cannot be verified. Gorbachev's offer for a 50 per cent reduction for that reason alone is meaningless. We have no ICBM production lines running."