The “In Brief” podcast brings you The Cipher Brief’s take on breaking news stories with leading experts in the global security space. With the Senate confirmation hearings underway for Donald Trump's top government posts, former ExxonMobil chairman Rex Tillerson is the nominee for Secretary of State. The Cipher Brief’s Executive Producer Leone Lakhani talks to Antony Blinken, the current Deputy Secretary of State, to find out what diplomatic challenges he sees as the most pressing for the next administration.