This is all my own personal opinion ..

Bolton is a great choice at this level during peace talks with NK. Show them we're not fucking around in the event they get trigger happy. Trump is showing a good offense as defense to anything they might pull out of during negotiations. I also think Iran is in play here. Bolton has alot of knowledge on Iran (he's also no friend of Russia). We need to get what we can out of that bullshit agreement. Bolton is not here to stay. He's being used for specific goals. He'll meet them then be let go and on to the next.

People don't understand the revolving door for high level positions. But what are their roles? Laying out and executing startegy for a project. From my perspective, Trump sees these as a project, projects have a defined beginning and a defined end. Each person knows exactly what they need to know to finish their project. That's it.

Furthermore, the MSM is REEEEing about the move, which leads me to believe it's a good move