(News Focus) N. Korea's WMD test moratorium deja vu raises cautious summit expectations 2018/04/21 11:54 By Lee Chi-dong SEOUL, April 21 (Yonhap) -- North Korea's announcement of a moratorium on most of its nuclear and missile activities is the highlight of the unpredictable communist nation's recent peace overture and a potential prelude to a breakthrough deal in the upcoming round of summit diplomacy.