Iran is taking steps toward an aggressive new form of censorship: a so-called national Internet that could, in effect, disconnect Iranian cyberspace from the rest of the world.

The leadership in Iran sees the project as a way to end the fight for control of the Internet, according to observers of Iranian policy inside and outside the country. Iran, already among the most sophisticated nations in online censoring, also promotes its national Internet as a cost-saving measure for consumers and as a way to uphold Islamic moral codes.

In February, as pro-democracy protests spread rapidly across the Middle East and North Africa, Reza Bagheri Asl, director of the telecommunication ministry's research institute, told an Iranian news agency that soon 60% of the nation's homes and businesses would be on the new, internal network. Within two years it would extend to the entire country, he said.

The unusual initiative appears part of a broader effort to confront what the regime now considers a major threat: an online invasion of Western ideas, culture and influence, primarily originating from the U.S. In recent speeches, Iran's Supreme Leader Ayatollah Ali Khamenei and other top officials have called this emerging conflict the "soft war."

On Friday, new reports emerged in the local press that Iran also intends to roll out its own computer operating system in coming months to replace Microsoft Corp.'s Windows. The development, which couldn't be independently confirmed, was attributed to Reza Taghipour, Iran's communication minister.