Craig Unger reveals that Bill Casey operated through the Safari Club, an off-the-books intelligence group. Casey utilized Iranian arms dealers, the Hashim brothers, who were secretly double agents working for him since the mid-1970s. Casey's best friend, John Shaheen, acted as the crucial cutout, meeting with arms dealers to shield Casey from media scrutiny. Further investigation confirmed that key source Ari Ben Mashi worked directly for Israeli military intelligence, Aman. This solidified the existence of a secret arms channel flowing from Israel to Iran, a fact Israel wanted hidden because it showed they participated in sabotaging an American presidential election. Guest: Craig Unger.