Iran 's efforts to develop its nuclear program have been stymied by a raft of challenges from international sanctions and set back by the 2010 Stuxnet cyberattack , two new reports from a Washington nuclear think tank conclude . New reports cite the effects of international sanctions on Iran 's nuclear efforts . A cyberattack also had a crippling effect on an enrichment site . Comment: Reports : Iran appears on a trajectory `` to producing weapons-grade uranium ''
New reports cite the effects of international sanctions on Iran 's nuclear efforts . A cyberattack also had a crippling effect on an enrichment site . Comment: Reports : Iran appears on a trajectory `` to producing weapons-grade uranium ''