On the basis of the two primary sources (Tevkelevand Kirilov),what initially prompted the Russian Empire to expand into the Qazaq steppe?In Tevkelev's diary, he mentions the moment when Kaisakstarshinas wanted to kill him, and he said to them that for the Russian Empire, there is no need for assistance from nomad tribes, but they need empire's help, calming them down. However, in Kirilov's text, the lands occupied by the Kirgiz-Kaisaks play an immense role in geopolitics. According to his words, there are benefits from the Kirgiz-Kaisaks becoming the subject of the Russian Empire.First of all, it prevents the ruler of Black Kalmyks from becoming too powerful. As we know, in the war between them and Kaisaks, Kontaisha succeeded the most by taking into their realm big cities such as Turkestan, Tashkent, Sairam. In those cities, Kontaisha gathered gold, strengthening his army, and there is a rumor that he might take into his control the wealthiest parts of Vodokshan. Moreover, he often raids Siberian towns and claims them as his realms. Hence, in the future, Kontaisha could create troubles for the Russian Empire. However, the joining of the Kirgiz-Kaisaks could give her Majesty at least eighty thousand armed men against Black Kalmyk's one hundred thousand.Secondly, it opens the door to central and southeast Asia. Kirilov was a person who had experience in exploring resource-rich areas. If the Russian Empire could have got to Vodokshan and Persia, andIndia, it would give her Majesty more power because those areas are known for their gold, lapis lazuli, and other prized gems. As we know from Tevkelev's text giving gifts to local rulers is likely will make them