He's just another Ivy League educated A-hole who has spent his entire career in Washington, D.C. If you read the guy's resume and track record and didn't know who he was, you'd describe him as a perfect personification of "The Swamp."
Ambassador Bolton along with Mike Pompeo will be the architects of America’s foreign policy. A builder like President Trump recognizes brilliance and knows good architects. Sometimes architects have to build things over swamps.