On May 31, 1988, Reagan addressed a packed audience at Moscow State University, with a remarkable -- yet now largely forgotten -- speech that capped his first visit to the Soviet capital. This fourth in a series of summits between Reagan and Soviet General Secretary Mikhail Gorbachev was a dramatic coda to their tireless efforts to reduce the nuclear threat. More than that, Reagan viewed it as 'a grand historical moment': an opportunity to light a...