In 1983, Ronald Reagan used a word to describe the Soviet U-nion that some of his advisors who wanted engagement with the Soviets wished he wouldn't use. It will anger the Soviet leaders, they said. It will make negotiations impossible. But Reagan used the word anyway. He called the Soviet regime "evil." And the impact of that word changed history. Continued...

As Callista and I show in our new movie, Ronald Reagan: Rendezvous with Destiny, American Presidents who speak out can have a big impact for freedom.

"He could not have helped us better," Lech Walesa, the head of Poland's Solidarity movement, said later. "I don't think any missiles or any army could have been more effective."

Yesterday, President Obama finally spoke forcefully and eloquently about the aspirations of the Iranian people who are demonstrating in the streets of Iran today. His words, "Those who stand up for justice are always on the right side of history" were particularly meaningful.

Still, President Obama is standing by his policy of engagement with the Iranian theocrats. Like the advisors to President Reagan, Obama wants to preserve the option of negotiations with Iran. A perfect example of this was the President's refusal in the press conference to address the issue of rescinding invitations to Iranian diplomats of the current Islamic regime to Fourth of July celebrations at U.S. embassies across the world.

But the President's policy of engagement with Iran is dead. The protestors in the streets of Iran killed it.

What's left is a tremendous opportunity - and a tremendous choice - for President Obama. He can use his great rhetorical skills and the resources of the American government to buttress the courage shown by the protestors in the Iranian streets, or he can use them to betray them.

He can seize this moment to help bring about the end of the planet's number one state sponsor of terrorism, or he can let it pass him by.

But he can't go back and negotiate with a leadership that stole an election and turned its thugs loose on the citizens who protested. He can't give legitimacy to a thoroughly illegitimate regime.

President Obama and his advisors are insisting that what's going on now in Iran is Iranian business and the United States has no business "meddling" in that country's affairs.

This is an interesting change from the party of Roosevelt, Kennedy and Carter. Since when did concern for freedom, justice and human rights become "meddling" on the part of America?

My colleagues at the American Enterprise Institute are keeping a running tally of the protests in Iran at IranTracker.org.

They count 1.3 million protestors, 392 arrests and 32 deaths - and that's just what they can collaborate.

Counting uncollaborated reports, arrests by the Iranian regime total 1,135. Deaths total 184.

In addition to the moral questions involved with up to 184 peaceful demonstrators being killed by the regime, a new State Department report describes in harrowing detail how what's going on today in Iran is most definitely America's business.

As Claudia Rosett outlined in Forbes, the report states flatly that Iran in 2008 "remained the most active state sponsor of terrorism."

What's more, President Obama's State Department reports that "Iran's involvement in the planning and financial support of terrorist attacks throughout the Middle East, Europe and Central Asia had a direct impact on international efforts to promote peace, threatened economic stability in the Gulf, and undermined the growth of democracy."

If there is a terrorist group out there killing innocent civilians and U.S. troops, Iran is supporting, training and arming it. Hamas. Hezbollah. The Taliban. The terrorists who plant IEDs to kill U.S. troops and innocent bystanders in Iraq. All of these mass murderers are clients of the Iranian regime.

All of that, and we haven't even got to the nuclear weapons Iran is busy acquiring.

While President Obama equivocated about the protests in Iran last week, Congress showed real leadership.

By an overwhelming bipartisan vote, both the House and the Senate passed resolutions expressing clear support for "all Iranian citizens who embrace the values of freedom, human rights, civil liberties, and rule of law."

Republicans and Democrats alike condemned the Iranian government's violence in the streets and suppression of independent communication through cutting off internet and cell phone access.

Congratulations to Democrats and Republicans in Congress for standing up for American values and standing up for the Iranian people.

President Obama has talked a lot, in the campaign and as President, of improving America's status in the world so that the force of our example and of our ideas can advance our interests.

If President Obama believes what he says - if he believes in the power of American ideas - then this is his moment.

If he believes in peace in the Middle East, this is his chance to influence one of the main obstacles to peace.

If he believes in protecting innocent lives from terrorists, this is his chance to change the course of the number one state sponsor of terrorism.

If he believes that freedom, democracy and equal rights for women are universal rights, this is his chance to do more than mouth the words.

The protestors on the Iranian streets are not inconvenient obstacles to a policy of engagement with the Iranian dictatorship. They are an opportunity to advance both American ideals and American interests.

For our principles as well as our security, President Obama should seize this opportunity.