As part of the radical political changes that have affected a number of Arab countries over the past 4 years, the toppling of regimes and the organization of the first fair and free elections in several Arab states have allowed Islamist parties to rise to power. This highly visible political trend has caused mixed reactions, both within these countries and internationally. Prior to the Arab Spring, most countries in the region banned Islamist movements from forming political parties. For decades, members of such movements were jailed, tortured, and exiled from their home countries. Even in those states where Islamist political parties were allowed, they had limited freedom and were under the scrutiny of the regimes, as was, for example, the Moroccan Justice and Development Party. The varied experiences of Islamist political parties in power over the last 2 years in Tunisia, Morocco, and Egypt offer a mixed picture. The debacle of Muslim Brotherhood rule in Egypt captured a great deal of international attention, but it did not resemble the trajectory of other governing Islamist parties in the region. Electorates have been disappointed by the performance of Islamist-led governments, which turned out to be unprepared to govern. Their poor performance is not only due to a lack of capability; it is also due to the fact that integration into the existing political system has not been smooth and free of obstruction. Islamist parties have faced fierce resistance both from secular parties and other forces in their respective societies and from abroad, as is evident from the opposition of rich Arab Gulf Monarchies.