FILE - In this Oct. 11, 1986 file photo, President Ronald Reagan shakes hands with Soviet Leader Mikhail Gorbachev in Reykjavik, Iceland. Although the moment, protagonists and locations become enshrined in history books, major summits hold no guarantee of further progress. In some cases, the summit is as good as it gets as relations remain stagnant or plummet further. (AP Photo/Ron Edmonds, File)