In 1260, however, the Great Khan claimant Ariq Böke appointed Chagatai Khan's grandson Alghu, and by the following year Alghu had control over much of the Khanate. When Alghu revolted against Ariq Böke in 1262, Ergene supported him. After Alghu died in 1266, Ergene enthroned Mubarak Shah as head of the ulus, without the permission of Kublai Khan, who was also proclaimed the Great Khan and defeated Ariq Böke 2 years after.