 According to the Swedish Defence University, since the 1970s, a number of residents of Sweden have been implicated in providing logistical and financial support to or joining various foreign-based transnational Islamic militant groups.Among these organizations are Hezbollah, Hamas, the GIA, Al-Qaeda, the Islamic State, Al-Shabaab, Ansar al-Sunna and Ansar al-Islam.In the 2000s according to Europol, Islamists in Sweden were not primarily seeking to commit attacks in Sweden, but were rather using Sweden as a base of operations against other countries and for providing logistical support for groups abroad.