After a century of rule by France, Algeria became independent in 1962. The surprising first round success of the fundamentalist FIS (Islamic Salvation Front) party in December 1991 balloting caused the army to intervene, crack down on the FIS, and postpone the subsequent elections. The FIS response has resulted in a continuous low-grade civil conflict with the secular state apparatus, which nonetheless has allowed elections featuring pro-government and moderate religious-based parties. FIS's armed wing, the Islamic Salvation Army, dissolved itself in January 2000 and many armed insurgents surrendered under an amnesty program designed to promote national reconciliation. Nevertheless, some residual fighting continues. Other concerns include large-scale unemployment and the need to diversify the petroleum-based economy.