Before this meeting took place several pundits, including Obama's Science Advosor bemoaned the fact that Trump has not yet appointed a cience advisor of his own. His whole attitude to science and scientists sems flaky at best. So, a bit like old old Elelred he went into the battle ''unreded'', which means ''un-counseled'' and therefore unready. There also seems to have been little discussion between specialists of any kind.
So, after their little chat which produced a whole three page document that every one says gives away far too much with no concrete checking system on what NK actually does.Since NK have a very long history of breaking treaties of every kind, to the point of telling lies it seems, not having belt, braces, staples, duct tape, double-sided tape, carbon fibre rope etc binding such an important ''agreement'' seems a tad foolish. But there yer go . . .
Seems stopping the joint war games with SK came as a complete surprise to them.
This sems to have been a combination of Trump treating this as though he is the CEO of America, not bound by anything the lesser lights say. He likes one-on-one talks (no witnesses) which is held to be part of his about face on the G7 talks. He can try to bully one person but is weak in front of a group. Add to that his standard bombastic blustering boasting, hs exageration and hyperbole and - well, don't put the hard hats in the attic just yet folks!
Just my analysis of the views of several spokesmen and women on news outlets.