DONALD TRUMP September 10, 2019 8:39 am Trump Fires National Security Adviser John Bolton President Donald Trump has fired National Security Adviser John Bolton, according to a tweet. US & World Videos 2:56 Kelly Clarkson jokes Jim Gaffigan is the Brock Purdy of dads 1:41 Prince William shares brief update on Princess Catherine to well-wishers at UK visit 1:28 LAPD dismantles protester encampments at UCLA 1:36 Arizona Senate repeals 1864 abortion ban 1:40 Democrats say Big Oil misled public for decades about climate change