https://en.wikipedia.org/wiki/Madman_theory
Not saying this is going on necessary, but from the game theoretic point of view it makes sense.
It seems that no amount of evidence is enough for some people.
"South Korea’s Foreign Minister tells me in Seoul that “clearly credit goes to President Trump” for bringing North Korea to the negotiating table."
https://twitter.com/camanpour/status/989423486438379520
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Some more evidence, this time of fear and projection: "Why Kanye West's Pro-Trump Tweets Are a Real Threat"
https://www.rollingstone.com/music/news/why-kanye-wests-pro-...
FWIW, this definitely caused me to up my estimation of him. It went from "absolutely dismal," to "very bad." I'll also note that it's just a bit too early to tell whether this will ultimately result in a good outcome. Shaking hands is a big step. But actions talk louder than photo ops.
Electing our first black president after the great financial crisis?
Bailing Europe out of WW2 after the depression?
Well even CNN gave him credit for getting the two Koreas to talk and possibly end the 70 year old war:
https://www.cnn.com/2018/04/26/world/korea-summit-kang-kyung...
"Clearly, credit goes to President Trump," Kang told CNN's Christiane Amanpour in Seoul. "He's been determined to come to grips with this from day one."
So in this case political "weakness" does seem to play well for the world?