Ubaidullah Khan

After the death of Muhammad Shaybani in 1510, the cities and lands controlled by the Uzbeks were divided among the family members.

Bukhara fell to Ubaidullah Khan, which he had to defend against Babur Emir of Kabul and future Mughal Emperor, and against the Safavids of Iran in 1511/12.

However, Ubaidullah failed to defeat Iranian Shah Tahmasp I (ruled 1524–76), as his five offensives in Khorasan were ultimately unsuccessful.

In September 1528 he suffered a defeat in the Battle of Turbet-i-Sheikh Jam, where the Iranians had deployed artillery for the first time.

Likewise, the Uzbek Khan Abu Sa'id, who ruled Samarkand between 1530 and 1533, had no interest in strengthening Ubaidullah's domestic power and refused to help him.