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As Berke sought to cross the Kura river to attack Hulagu's son, Abaqa Khan, he fell ill and died sometime between 1266 and 1267. He was succeeded by his grandnephew, Mengu-Timur. The policy of alliance with the Mamluks, and containment of the Ilkhanate, was continued by Mengu-Timur. Many historians are in agreement that the intervention by Berke against Hulagu saved the remainder of the Holy Land, including Mecca and Jerusalem, from the same fate as Baghdad.