I don’t think he laid a glove on him. He made a distinction between Bolton seeking to remove officials from his “portfolio” and having them fired, noting that Bolton is being accused of the former not the latter. I’m sorry, but trying to remove someone from your portfolio just doesn’t have the same kind of zing as a charge. Then, he got into the weeds with Bolton over his view on the distinction between peace-keeping and peace-enforcement. I can’t believe anyone cares much about this, and the general impression Bolton gave is of someone who is extremely well-informed and thoughtful on these issues–indeed, probably better-informed and more thoughtful than the distinguished ranking minority member.