From its open support of terror groups like Hamas and Hezbollah, to its push for nuclear weapons and threats to wipe America and Israel off the map, Iran has become the undisputed champion of radical Islam.
Many believe that the West's struggle with Iran and the forces of jihad began in 1979.
Click play for more CWN coverage. Also, click here to watch Pat Roberton's interview with author Joel Rosenberg.
It was the year of the Iranian revolution and the Soviet Union's invasion of Afghanistan.
The results were the rise of the mullahs in Iran and the defeat of the Soviets -- largely by radical Islamists, including Osama bin Laden.
He and his fellow "holy warriors" formed al Qaeda soon after. The group has continued to expand its reach ever since.
"(Al Qaeda) is a centrally directed international organization with a headquarters in Pakistan," said Bruce Riedel, a former C.I.A. analyst who now works for the Brookings Institution in Washington. "With franchises in Iraq, Saudi Arabia, Indonesia, with cells in western Europe; but it's also an idea that inspires dozens of other people to cooperate in support of it."
The ascendance of Iran and al-Qaeda has given the radicals the bully pulpit for the past 30 years. But that may be about to change.
Author Joel Rosenberg says the Muslim world is seeing the growth of two new revolutions. One is led by Muslim reformers who promote Jeffersonian ideals of democracy and freedom. The other is led by a group he calls the revivalists: Muslims who are turning to Jesus Christ in record numbers.
Rosenberg's new book, Inside the Revolution, takes an in depth look at this battle for the soul of the Muslim world-one whose outcome could change the course of history.
*Original broadcast March 10, 2009.