"In addition, it is very likely that United States action in Iraq caused Iran to open its nuclear facilities for international inspection and suspend its uranium enrichment activities"

This quote by Jim Gerlach suggests that the United States' actions in Iraq had a direct effect on Iran's nuclear activities. Particularly, it suggests that the US action in Iraq caused Iran to open its nuclear facilities for global inspection and suspend its uranium enrichment activities. This suggests that the US action in Iraq had a significant influence on Iran's nuclear policy, and that the United States had the ability to affect Iran's nuclear activities through its actions in Iraq. This could be seen as a positive result of US action in Iraq, as it has helped to minimize the risk of nuclear expansion in the region. Nevertheless, it is important to keep in mind that this quote does not offer any proof to support the claim that United States action in Iraq was the direct reason for Iran's nuclear policy changes.