WASHINGTON, Feb. 9 (UPI) -- Israel's intelligence agency has been working with an Iranian group classified as terrorist to kill Iranian nuclear scientists, U.S. officials tell NBC News.
Five Iranian scientists have been assassinated since 2007. The Iranian government blames the Israeli Mossad and the People's Mujahedin of Iran or MEK, a group that supported the Islamic Revolution in 1979 and later split from the regime.