 Nyorai mberi kweiyi ndima - Mutungamiri weU.S. Barack Obama akagamuchira mutemo we mwoyo murefu, achidzivisa kuita zvibvumirano neNorth Korea. Kunetsana neSouth Korea neUnited States kwakawedzera muna 2010 nekunyura kwechikepe chehondo cheSouth Korea Cheonanuye kurwisa kweNorth Korea Yeonpyeong Island. 