Some Muslim-minority countries recognize the use of sharia-based family laws for their Muslim populations.[15][16] The adoption and demand for sharia in the legal system of nations with significant Muslim-minorities is an active topic of international debate.[17] Reintroducing sharia in Muslim-majority nations has been described as "a longstanding goal for Islamist movements",[18] and attempts to introduce or expand sharia have been accompanied by controversy,[19] violence,[20] and even warfare.[21]