FILE – In this Wednesday, Aug. 28, 2013 citizen journalism image provided by the United media office of Arbeen which has been authenticated based on its contents and other AP reporting, members of the UN investigation team take samples from sand near a part of a missile that is likely to be one of the chemical rockets according to activists, in the Damascus countryside of Ain Terma, Syria. Russia’s proposal to place Syria’s chemical weapons stockpile under international control for dismantling would involve a lengthy and complicated operation made more difficult by a deep lack of trust. Syria is believed by experts to have 1,000 tons of chemical warfare agents scattered over several dozen sites across the country, and just getting them transferred while fighting rages presents a logistical and security nightmare. (AP Photo/United media office of Arbeen)