The original Stuxnet, the one first detected in summer 2009, was dependent upon a USB drive being inserted in the target network. It failed, and one must wonder if that failure was connected with the arrest of an 'Israeli' spy in Iran. The later infection was spread by more internet centric methods, and failed as well. But then we all must understand that intelligence is not the attribute of any race or nationality.
U.S. Democratic Senator Merkley airs support for Iran nuclear deal (Reuters)