Founded in 1947, the CIA was established under the mission 'know thine enemy'. Now, under US President Donald Trump, the agency is being gutted. Pulitzer Prize winning journalist, Tim Weiner, argues that Trump has instigated what he calls an “ideological purge” at the CIA. Analysts and officers with decades of experience are being pushed out (or told to leave) under the new leadership, of CIA Director John Ratcliffe

• GUEST: Tim Weiner, author The Mission: The CIA in the 21st Century
• PRODUCER: Ali Benton