seoul north korean soldier defect south monday shoot wound north korean military south korea say soldier find south side border village panmunjom 50 meter south military demarcation line wound shoulder elbow accord south korean defense ministry official defect north korean guard post nearby treat hospital defector urgently transfer hospital helicopter unite nations command exchange fire side ministry official tell reuters since area expose north crawl toward get official add immediate comment incident north korea average 1,000 north koreans defect south korea every year travel via china unusual north korean cross land border divide two koreas technical state war since 1950-53 conflict end truce peace treaty last cross june south korean ministry official say soldier condition military rank remain verify defection come amid tension two koreas unite state north north korea year boost nuclear missile capacity series test face u.s. president donald trump vow stop able hit mainland unite state nuclear weapon north korea conduct sixth powerful nuclear bomb test sept. launch missiles since fire one japan sept. 15 long lull year north korean soldier shoot wound defect south