What was nulegu greatest military accomplishment?

Nulegu, a prominent khan of the Mongol Empire in the 13th century, is best known for his role in expanding Mongol influence across Central Asia. His greatest military accomplishment was the successful campaigns against various nomadic tribes, which helped consolidate Mongol power in the region. Nulegu's strategies and leadership contributed to the unification of diverse groups under Mongol rule, setting the stage for further expansions by his successors.