In November 2014, in a press conference in the Washington office of the National Council of Resistance of Iran, Jafarzadeh revealed that Iran had built 2 explosive chambers, not one as previously believed; that Saeed Borji is the key person responsible for explosive chambers design and installation at Parchin military site in southeast Tehran; that Ukrainian expert Vycheslav V. Danilenko was directly involved in design and installation of the explosive chamber; his son-in-law was part of the project when in Iran; and that Tehran used various covers to conceal its nuclear weaponization activities, and the main organization (SPND) under the direction of Mohsen Fakhrizadeh formed by the Defense Ministry in 2011 to overtake all nuclear weapons related activities is actually heading all such projects in Parchin. This new information showed that Iran actively pursued weaponization way past 2006 and has sought foreign expertise, companies, and constantly changed cover to hide its nuclear weapons program.