It was at this point , according to Sebeos , that Heraclius had agreed Agree_or_refuse_to_act to stand down and was about ready to become Becoming a client of the Sasanian emperor Khosrow II , allowing Preventing_or_letting the Roman Empire to become Becoming a Persian client state , as well as even allow Preventing_or_letting Khosrow II to choose Choosing the emperor .

After negotiations Communication with Byzantine Emperor Heraclius , a Byzantine ambassador was sent Sending to Persian Shahanshah Khosrau II , and Shahin withdrew Escaping again to Syria .

According to Sebeos , when they reached Arriving Chalcedon in 615 , Heraclius had agreed Agree_or_refuse_to_act to stand down and was about ready to become Becoming a client of the Sasanian emperor Khosrow II , allowing Preventing_or_letting the Roman Empire to become Becoming a Persian client state , as well as even allow Preventing_or_letting Khosrow II to choose Choosing the emperor .