Ghiyas-ud-din Baraq Borjigin, Khan of the Chagatai Khanate

[... Batu's grandson Mengu-Timur was nominated by Kublai and succeeded his uncle Berke.[29] However, Mengu-Timur secretly supported the Ogedeid prince Kaidu against Kublai and the Ilkhanate. After the defeat of Baraq (Chagatai Khan), a peace treaty was made among Mengu-Timur, Kaidu and him in c.1267. One-third of Transoxiana was granted to Kaidu and Mengu-Timur according to this peace treaty.[30] In 1268, when a group of princes operating in Central Asia on Kublai's behalf mutinied and arrested two sons of the Qaghan (Great Khan), they sent them to Mengu-Timur. One of them, Nomoghan, favorite of Kublai, was located in the Crimea.[31] Mengu-Timur might have struggled with Hulegu's successor Abagha for a brief period of time, but the Great Khan Kublai forced them to sign a peace treaty.[32] He was allowed to take his share in Persia. Independently from the Khan, Nogai expressed his desire to ally with Baybars in 1271. Despite the fact that he was proposing a joint attack on Iran with the Mamluk Sultanate (Cairo), Mengu-Timur congratulated Abagha when Baraq was defeated by the Ilkhan in 1270.[33] ]...[ Despite the fact that he was proposing a joint attack on Iran with the Mamluk Sultanate (Cairo), Mengu-Timur congratulated Abagha when Baraq was defeated by the Ilkhan in 1270.[33]

ref :https://www.podgorski.com/main/khanate-golden-horde.html