A week after announcing the exit of John Bolton, President Trump said Wednesday his new national security adviser pick is Robert O'Brien, who currently serves as U.S. hostage envoy. Trump last week said he asked for Bolton's resignation because he "disagreed strongly with many of his suggestions," although Bolton disputed Trump's characterization and said he offered his resignation. O'Brien will be Trump's fourth national security adviser in fewer than three years. In his tweet announcing the news, Trump said he has "worked long & hard with Robert," although he reportedly picked O'Brien largely because of his track record on paper, not a personal connection. The Wall Street Journal reported that Trump "liked the look of" O'Brien, a "key condition for many Trump appointments."

Scroll for 5 things you
need to know now