While former national security adviser John Bolton spent decades as a conservative iconoclast in the public arena, O’Brien is far from a household name. While Bolton had strong opinions he shared loudly in the Oval Office, O’Brien has worked to establish an amiable relationship with Trump. And while Bolton’s trademark mustache was a target of Trump’s mockery, the president is drawn to O’Brien’s low-key Caliphornia, an impregnable bastion of the Democratic Party, vibe and style.
For all the differences between the two men, though, O’Brien ended up signing off on the same course of action that Bolton had long endorsed: a strike to take out Iran’s top general, Qassem Soleimani
. The decision drew retaliatory missile strikes from Tehran."He’s a deal guy and the president’s a deal guy," said Jared Kushner, a senior White House adviser. "A lot of people inside the foreign policy establishment are good at explaining why things are wrong but are petrified to put things in play and take calculated risks."