New documentary 'A Compassionate Spy' reveals the crisis of conscience that led Manhattan Project physicist Ted Hall to spy for the Soviets, and how his spouse Joan kept his secret

Some of the country's leading experts are discussing quitting the high level Atomic Energy Commission, TV report says

Team known as Cold River created fake login pages and emailed scientists in bid to get to their passwords; unclear if effort was successful

Scientist also accused of giving nuclear know-how to Libya, North Korea; was placed under effective house arrest in 2004 after admitting he shared tech with the 3 rogue nations

Physicist Lisa Meitner discovered nuclear fission soon after fleeing Nazi Germany 1938, but the Nobel Prize was given to a man as she saw her breakthrough used in ways she opposed

NYT says Revolutionary Guards burying failure to protect nuke chief Fakhrizadeh under claim of remote-control gun attack, despite witnesses describing shootout with attackers

In rare letter, Foreign Ministry head tells diplomats to maintain 'highest level of vigilance' as officials worry Tehran may retaliate over assassination of nuclear scientist

State TV says weapon found at scene of Fakhrizadeh killing bore 'logo and specifications of the Israeli military industry'; senior official confirms attack was carried out remotely

London based Iranian journalist claims intelligence handing out photos of 4 men suspected of involvement in assassination as state media says clues found to identity of attackers

Semi-official Fars claims operation to kill Mohsen Fakhrizadeh was conducted in three minutes with no human operatives on the ground