 Complete the following phrase:  In addition to the legitimacy given by medieval scholarly opinion, nostalgia for the days of successful Islamic empires simmered under later Western colonialism. This nostalgia played a major role in the Islamist political ideal of Islamic state, a state in which Islamic law is preeminent. The Islamist political program is generally to be accomplished by re-shaping the governments of existing Muslim nation-states; but the means of doing this varies greatly across movements and circumstances. Many democratic Islamist movements, such as the Jamaat-e-Islami and Muslim Brotherhood have used the democratic process and focus on votes and coalition-building with other political parties. Radical Islamic movements such as the Taliban and al-Qaeda embrace militant Islamist ideology, and were prominent for being part of the anti-Soviet resistance in Afghanistan during the 1980s. Both of the aforementioned militant Islamist groups had a role to play in the September 11 terrorist attacks in 2001, presenting both near and far enemies asregional governments and the United States respectively. They also took part in the bombings in Madrid in 2004 and 