In this episode, we discuss the recent mysterious killing of Mohsen Fakhrizadeh, an Iranian nuclear scientist about a week ago. Assassinated by (apparently) a remote-controlled machine gun in a roadside ambush, this scientist played a role in the nuclear weapons program in Iran for decades, but his most important contributions were many years back. So who exactly was Fakhrizadeh? Why could he have been targeted? What was the motive and purpose for going after him now? Who was behind the attack? An individual, a country? And what happens next? We finish by talking about Iran's options going forward.