President Mahmoud Ahmadinejad on Wednesday extolled what he described as Iran's self-sufficiency in producing army equipment and said Iran was so powerful now, no other country would dare launch a military strike against it. "We have passed our point of vulnerability," Ahmadinejad told state television during a visit to an Iranian defensive equipment exhibition. "This means nobody would dare stage a military assault against our nation." Ahmadinejad said possible adversaries were aware of Tehran's defense capabilities and said that Iranian national unity was also a key factor as to why no other country would attack Iran. "I don't think there is an item that we cannot produce, if we need it," Ahmadinejad said.