N. Korea to continue missile tests for upgraded version: expert SEOUL, Oct. 31 (Yonhap) -- North Korea is expected to continue short-range missile tests with the aim of developing an advanced KN-06 missile, according to a U.S. expert. Bruce Bennett, a senior researcher at the RAND Corp., said that the North's launch of five KN-02 missiles on Oct. 12 was part of efforts to develop a more advanced KN-06 missile, Radio Free Asia (RFA) reported Saturday The KN-02, an upgraded version of the Russian SS-21, is known to have a range of up to 120 kilometers.