over the next few decades , the ottomans solidified Cause_change_of_strength their control Control of the region , incorporating Cause_to_amalgamate it into their empire until it was recaptured Conquering by the persians in 1623 .

the kingdom of georgia , a subject of the persians for many centuries , became Becoming a russian protectorate in 1783 , when erekle ii signed the treaty of unk , whereby the empress promised to defend him in case of the iranian attack .