"The Muslim Brotherhood was founded in 1928 by Hassan al-Banna. The Muslim Brotherhood main branch, based in Egypt, has financed terrorist attacks worldwide that have killed Americans and others. The Brotherhood attacks Christians, women, and other religious minorities, in the name of Allah to fulfill al-Banna's vision of "fighting the unbelievers…to dismantle the power of the enemies of Islam." The methods al-Banna suggested to advance jihad included "beating them, plundering their wealth, destroying their places of worship, and smashing their idols." Al-Banna also said "it is the nature of Islam to dominate, not to be dominated" and to "impose its law on nations and to extend its power to the entire planet."

Hamas, of recent Gaza fame, self identifies as "one of the wings of the Muslim Brotherhood in Palestine" and was designated as a terrorist organization in 1995 by President Clinton. The Kuwaiti branch of the Muslim Brotherhood was designated as a terrorist organization by President Bush shortly after the September 11, 2001 attacks.

The 9/11 Commission reported that the Islamization of Khalid Sheikh Mohammed, and 1993 World Trade Center bomber Ramzi Yousef, were during their membership in the Muslim Brotherhood.

Majid Al-Zindani, who worked for years with Osama Bin Laden, was designated as a terrorist by the United States in February 2004. Al-Zindani was not only a member but a leader in the Yemeni branch of the Brotherhood.

Mohammad Jamal Khalifa, who was Osama Bin Laden's brother in law, was a Muslim Brotherhood leader who supported the Islamic terrorists waging an insurgent campaign in the Philippines.

The Muslim Brotherhood has participated in "terror conferences" with groups such as Al-Qaeda, Iranian intelligence, Egyptian Islamic Jihad (led by current Al Qaeda leader Ayman Al-Zawahiri), Algerian GIA, Hamas (the Palestinian branch of the Muslim Brotherhood), Ennahdha (the Tunisian branch of the Muslim Brotherhood), and the Islamic Action Front (the Jordanian Branch of the Muslim Brotherhood)."