Sher Shah Suri defeats Humayan in 1539and becomes
Emperor of Delhi .
Humayan crossed over into Safavid
Persia and gain the backing of Tahmasp Safavi Shahinshah of Persia
after converting to Shia Islam.
Humayan entered the Mughal empire with an army. This
started a 8 year war that finally resulted in Humayan entering Kabul as
undisputed leader in 1553. At this point Humayan had his brother Kamran
blinded and the court of Kamran was gone forever.