Western sources told the Times Israel was monitoring “radioactivity and magnitude of explosives tests” and that “special forces used Black Hawk helicopters to carry commandos disguised as members of the Iranian military and using Iranian military vehicles”. The sources believe “Iranians are trying to hide evidence of warhead tests in preparation for a possible IAEA visit”. (Cited in Report: Israeli soldiers scour Iran for nukes, Ynet, March 25, 2012)

The number of Israeli intelligence missions at the Parchin military base in Iran has increased in the past few months, according to the article. During that period, Tehran has been negotiating with the IAEA which had requested to visit Parchin. According to Iran's permanent representative to the IAEA, Ali Asghar Soltanieh, both parties had agreed in early February that the visit would take place in March. (Gareth Porter, Details of Talks with IAEA Belie Charge Iran Refused Cooperation, IPS, March 21, 2012)

The IAEA requested to visit Parchin in late January and late February, after having agreed to a visit in March. The IAEA thus requested to visit the military complex exactly at the same time Israel was intensifying its secret operations to allegedly search for a “smoking gun”.