than for the entire century. certainly that getting a reaction from north korea. according to the intelligence agency as well soldiers, along the zone have also been told to report a situation first before taking measures against it potentially the nis says this is because they appreciate there could be some kind of unaccustomed or unintended clash. so they're trying to prevent that from happening. there is some diplomacy going on. there's a top north korean tip mat in ros could you now meeting with russian officials. obviously not between the u.s. and north korea. that war of words is still continuing. one north korean defector i spoke to today said he's particularly concerned because the u.s. president is now making personal insults that. is very insulting. >> trump tweets forced twitter to even clarify their threat