Do you imagine a hardened war veteran with military accolades who’s seen the cost of war and knows its price? Or a nationalist who’s fine throwing human life away from the safety of his armchair, despite doing everything in his power to avoid going off to war himself as a youth? If you picture the latter, you’ve got Trump’s former national security advisor John Bolton.

John Bolton did serve in the National Guard and Army Reserve. But he did so in order to avoid being drafted for the Vietnam War, essentially biding his time stateside out of fear of real battle. “I confess I had no desire to die in a Southeast Asian rice paddy. I considered the war in Vietnam already lost,” wrote John Bolton in his 25th college reunion book.

Speaking from a position of privilege might be Bolton’s greatest asset, though. Those who have seen war generally speak about it in more tempered measures, while Bolton reached his position through pushing extremes.

Throughout his long career, Bolton has worked under multiple right-wing administrations, from Reagan to W. Bush to Trump. During this time, he’s advocated again and again for war, pushing for a U.S. invasion of Iraq dating back to shortly after the first Gulf War, calling for the “end of North Korea,” and advocating to terminate the Iran Nuclear Deal. He has also expressed strong nationalistic views against the concept of the United Nations, stating, “There is no United Nations. There is an international community that occasionally can be led by the only real power left in the world, and that’s the United States, when it suits our interests and when we can get others to go along.”

John Bolton’s greatest supporters tend to be similarly-minded radicals like Dick Cheney and Donald Trump, while his detractors tend to be anyone more moderate. Even fellow Republicans denounce Bolton. Condoleezza Rice resisted Cheney’s efforts to make Bolton her deputy when she was secretary of state, instead passing him off as a UN ambassador. During the nomination hearing for that job, conservative Republican intelligence official Carl Ford described him as a “kiss-up, kick-down sort of guy” who “abuses his authority with little people.” Even George W. Bush would later say he regretted Bolton’s appointment, allegedly saying he didn’t “consider Bolton credible.”

And yet Bolton was named the national security advisor to Donald Trump, a fellow draft dodger with a known disregard for human life. To Trump, it didn’t matter that Bolton was reviled by the international community. It didn’t matter that Bolton was considered radical, largely disrespected even within his own party. For Trump, Bolton was the right man for the job. It remains to be seen whether he will do a better job as a witness.