Inside the Secretive Group Trying to Bring Down North Korea’s Regime

ROME—One early morning in November 2018, North Korea’s prime diplomat in Italy still left his embassy’s compound with his wife. He informed colleagues they were going for a stroll.

Instead, the couple bought into a auto idling close by and never ever returned. Driving the getaway auto that working day was a member of a clandestine group called Absolutely free Joseon, folks acquainted with the procedure say.

For…