ISIS rocketed onto the world stage seemingly out of nowhere, beheading American hostages, bulldozing international borders, routing the American-trained Iraqi army, and carving out a new state that rules eight million people and a territory larger than the United Kingdom.

But who are they?

Where did ISIS come from, and how did they rise to power in so little time?

What is driving them—and how can they be stopped?

New York Times bestselling author Robert Spencer reveals the blood-drenched history and inner workings of the Islamic State—its military conquests, how it is financing its expansion, and the ideology that is driving its success.

As Spencer reveals, the Islamic State has taken the first steps on the path to becoming a serious world power—steps that Osama bin Laden and al-Qaeda dreamed of but were afraid to take.

The Complete Infidel's Guide to ISIS is your one-stop easy reference for all you need to know about ISIS—and how "infidels" can stop its reign of terror.

From Robert Spencer, the New York Times bestselling author of The Politically Incorrect Guide to Islam and The Complete Infidel's Guide to ISIS, comes a bold defense of freedom of speech—the single most valuable freedom humanity has, a freedom now endangered world-wide.

Our Most Dangerous Enemy

Think it's ISIS? Think again.

Iran is the terrorist powerhouse of the world—made all the more dangerous by the disastrous "nuclear deal" that restricts Iran's nuclear ambitions hardly at all.

The Iranian government is an open enemy of the United States—and of anyone who dissents from Shia Islam.

Iran confronts U.S. Navy ships in the Persian Gulf "on a near daily basis."

It executes more of its citizens than any other nation.

It is a country torn by hypocrisy—lectured by mullahs, and with brutally enforced Islamic religious laws, but rife with alcoholism.

Once America's ally, Iran now claims leadership of the global jihad, and the ayatollahs' aim is nothing less than world conquest for Islam.

In his extraordinary new book, The Complete Infidel's Guide to Iran, New York Times bestselling author Robert Spencer reveals:

How the Iranian “nuclear deal” is sheer capitulation to the mullahs, allowing Iran to inspect its own facilities and pursue nuclear weapons

Iran’s long-standing support for terrorists—including shocking evidence that Iran helped plan the 9/11 attacks

Why Iran wants nuclear weapons—clue: it’s not about deterrence

American diplomatic folly—why the Obama administration has grossly underestimated the Iranian threat

A new grand strategy: how Iran's Shi'ite terrorism might be contained and its threat to the United States reduced

The Islamic Republic is already at war with America. If we refuse to recognize that fact, we are only falling prey to the mullahs' campaign of duplicity.

The Complete Infidel’s Guide to Iran exposes the true nature of the threat, lays out what America must do to defeat it, and gives you all the information you need about America's least understood yet potentially most lethal foe.