But a U.S. military task force had been passing on data to the Multi-National Force Iraq (MNFI) command that told a very different story. The data collected by the task force in the previous six weeks showed that relatively few of the weapons found in Shi'a militia caches were manufactured in Iran.
According to the data compiled by the task force, and made available to an academic research project last July, only 70 weapons believed to have been manufactured in Iran had been found in post-invasion weapons caches between mid-February and the second week in April. And those weapons represented only 17 percent of the weapons found in caches that had any Iranian weapons in them during that period.
The actual proportion of Iranian-made weapons to total weapons found, however, was significantly lower than that, because the task force was finding many more weapons caches in Shi'a areas that did not have any Iranian weapons in them.
The task force database identified 98 caches over the five-month period with at least one Iranian weapon, excluding caches believed to have been hidden prior to the 2003 U.S. invasion.
But according to an e-mail from the MNFI press desk this week, the task force found and analysed a total of roughly 4,600 weapons caches during that same period.
The caches that included Iranian weapons thus represented just 2 percent of all caches found. That means Iranian-made weapons were a fraction of one percent of the total weapons found in Shi'a militia caches during that period.
The extremely small proportion of Iranian arms in Shi'a militia weapons caches further suggests that Shi'a militia fighters in Iraq had been getting weapons from local and international arms markets rather than from an official Iranian-sponsored smuggling network.