Thus far, however, Tehran has declined any significant retaliation for actions it clearly perceives as provocations. Some of the spin in Washington had floated the idea that the recent used car salesman-embassy bombing plot was, in fact, an instance of Iranian retaliation, but there are far too many grounds for skepticism over those allegations to suggest that Iran's capabilities had been reduced to such buffoonery. A more prudent explanation might be that Iran has until now restrained itself from retaliating for covert actions against its nuclear program, sensing that these might, in fact, be designed to provoke Iranian acts of retaliation that would, in turn, serve as a pretext for a full-blown military attack on Iran and its nuclear facilities.

