 However, when the general had reached the Mughan plain, he found out that Mostafa Khan had entered negotiations with the Russians.Mostafa Khan hoped that the Russians would recognize a Shirvan Khanate "enlarged" to the boundaries of the Shirvanshah's of the Medieval era.Though Mostafa Khan was uncomfortable with Tsitsianov's proposal, the latter threatened that if he wouldn't agree with his terms, he would replace Mostafa with his younger brother (who was reportedly enthusiastic about it).