How mony years lead khalifa ali?

Khalifa Ali ruled as the fourth caliph of Islam from 656 to 661 CE, leading for approximately five years. His leadership followed the assassination of Uthman, the third caliph, and was marked by significant challenges, including civil strife and conflicts known as the First Fitna. Khalifa Ali is remembered for his commitment to justice and his efforts to unify the Muslim community during a tumultuous period.