"He's the one doing the execution and starvation of his people." - yup and you would possibly agree that less of that would be a good thing?
I realise that it makes no difference to you personally but to the people who would otherwise have been starved and/or executed?
Worth a handshake?
What about the released hostages? The families who get the POW remains back? Worth a handshake?
Again, no difference to you, you'll still think ill of President Trump no matter what, but to the people slightly more personally involved and less obsessed with badmouthing the President irrespective of outcomes.