The North Korean crisis has proven frustrating to the American military: despite the enormous gap in power between the two nations, a military strike has been strongly discouraged because Seoul and its 25 million residents are only 35 miles from the border, well within range of North Korean artillery. Any military strike against the North could then be answered with a massive loss of life in the South."But Mattis has hinted that the Pentagon has a few tricks up its sleeve that could prevent such a counterstrike. When asked during a Monday press conference, "is there any military option the U.S. can take with North Korea that would not put Seoul at grave risk?" Mattis responded in the affirmative
https://sputniknews.com/military/201709191057534095-mattis-north-korea-strike-seoul/
