Hopefully after the inevitable conflict between US and NK is over, we can see about Trumps role in this. And if he should be charged with any federal crimes, treason or with international war crimes. While he’s President there is not much that can be done about him.
And it seems like progress on impeachment is slow and won’t make it in time before the end of the decades old cease fire. While we are in hot war, impeachment process will be suspended entirely. In a way it is in Trump’s best interest to start a real war if he thinks he’ll lose either the Russian election issue or the emoluments clause issue.