I don't suppose the author provides a source for that statement.
It's all in the book/movie called "Epicenter" by Joel C. Rosenburg. The DVD version of Epicenter features Dr. Tim LaHaye of the Left Behind series. So it's big in the Evangelical/End Times crowd, and really is quite fascinating to see how the prophecies in the Bible/Koran are converging.
In the 70's it was Russia v. Israel. Now it's Iran v. Israel. The Bible says that it will be God and Israel against everyone else on the planet.
Hagee seems to have this idea that the United States must help Israel in order for God to fulfill his promises. Wrong.
The United States is in the process of self destructing. If we continue in our slide toward Gomorrah, we will no longer exist as a Nation long before Christ returns in Glory.