Having established Mughal rule over northern India, Akbar turned his attention to the conquest of Rajputana. No imperial power in India based on the Indo-Gangetic plains could be secure if a rival centre of power existed on its flank in Rajputana. The Mughals had already established domination over parts of northern Rajputana in Mewat, Ajmer, and Nagor. Most Rajput states accepted Akbar's suzerainty; the rulers of Mewar and Marwar, Udai Singh and Chandrasen Rathore, however, remained outside the imperial fold. In 1567, Akbar moved to reduce the Chittor Fort in Mewar. Chittorgarh fell on February 1568 after a siege of four months. The fall of Chittorgarh was followed up by a Mughal attack on the Ranthambore Fort in 1568. Akbar was now the master of almost the whole of Rajputana. Most of the Rajput kings had submitted to the Mughals. Akbar would celebrate his conquest of Rajputana by laying the foundation of a new capital. It was called Fatehpur Sikri ("the city of victory").