tokyo japan chief cabinet secretary yoshihide suga say friday north korea remark behavior absolutely unacceptable provocative regional international security suga speak north korean leader kim jong un vow make u.s. president donald trump pay dearly threaten destroy country north korea foreign minister quote say believe north could consider hydrogen bomb test pacific ocean japanese defence minister itsunori onodera say comment north korean foreign minister ri yong ho utterly unacceptable japan call north korea 's behavior 'absolutely unacceptable