The name Jemaah Islamiyah dates to the late 1970s, but experts aren't certain if the name referred to a formal organization or an informal gathering of like-minded Muslim radicals-or a government label for Islamist malcontents. The group has its roots in Darul Islam, a violent radical movement that advocated the establishment of Islamic law in Indonesia, the world's most populous Muslim country and also home to Christians, Hindus, and adherents of other faiths. Darul Islam sprang up as the country emerged from Dutch colonial rule in the late 1940s, and its followers continued to resist the postcolonial Indonesian republic, which it saw as too secular. Some experts say JI was formed by a small handful of Indonesian extremists exiled in Malaysia in the late 1980s. In its early years, JI renounced violence, but the group shifted tactics in the late 1990s because of suspected links with al-Qaeda figures in Afghanistan.