 Under Jahangir, the empire continued to be a war state attuned to conquest and expansion.Jahangir's most irksome foe was the Rana of Mewar, Amar Singh, who finally surrendered in 1613 to Khurram's forces.In the northeast, the Mughals clashed with the Ahoms of Assam, whose guerilla tactics gave the Mughals a hard time.