Steve Bannon is an American political strategist, media executive, and former investment banker. He served as White House Chief Strategist in the Trump administration from January to August 2017, playing a key role in shaping its nationalist and populist agenda. Bannon co-founded Breitbart News, a far-right media outlet, and has been a prominent figure in conservative politics both in the U.S. and internationally. His career has included roles in the military, finance, and film production.