Regardless if you love or hate Trump, whether he deserves the credit for the peace in Korean peninsula (if it comes and it lasts) solely depends on his role.
So what did he do to make it happen?

Anyone?

I don’t see anything, but maybe I am blind due to bias. I only see him comparing the size of a button. Before Kim the third declares that he has achieved his nuclear ambition and wants to have a joint Olympic team (and sit down with South Korean), what did Trump do (other than keep provoking the honorable rocket man)?