Some of Ivan's advisers, including both Sylvester and Adashev, now advised him to make an end of the Crimean khanate, as he had already made an end of the khanates of Kazan and Astrakhan.
This rapid absorption of the khanates brought Russia into close proximity to Afghanistan, and the reception of Kaufmann's emissaries by the Amir was a main cause of the British war with Afghanistan in 1878.
As thus traced, the boundary in Central Asia includes the two khanates of Bokhara and Khiva, which, though nominally protected states, are to all intents and purposes integral parts of the Russian empire.
For some time longer the Tatars remained troublesome neighbours, capable of invading and devastating large tracts of Russian territory and of threatening even the city of Moscow, but the Horde was now broken up into independent and mutually hostile khanates, and the Moscow diplomatists could generally play off one khanate against the other, so that there was no danger of the old political domination being re-established.
The Golden Horde, long weakened by internal dissensions, had now fallen into several khanates, the chief of which were Kazan, Astrakhan and the Crimea.