Donald Trump has appointed Breitbart News’ Steve Bannon to be chief executive of his presidential campaign, and those familiar with the conservative media mogul’s style claim he is ready to win the White House race “at all costs.”

Bannon, a Harvard graduate, ex-Goldman Sachs banker and former naval officer, is taking a temporary leave of absence from Breitbart.com to preside over the Republican presidential nominee’s political team for the remainder of his campaign against Hillary Clinton.