Iran has accused Israel of being behind the recent assassinations of five Iranian nuclear scientists inside Iran. Last week, NBC reported that the Israeli secret service has provided money, training and weapons to an Iranian dissident group that is thought to be responsible for the killings of the scientists. An Iranian official said Mossad, the Israeli secret service, trained the group on the use of motorcycles to attach small magnetic bombs to cars, as well as building a replica of an Iranian scientist’s home for the group to use in training. The Iranian group, called the People’s Mujahedin of Iran, may also have been involved in a November explosion near Tehran that destroyed a missile facility and killed more than a dozen researchers.