After multiple losses of Imam Shamil at the end of Caucasian War, Russians and Chechens unify their forces. Former Chechen rebels and their men join Russian ranks. 03 November 1858 General Evdokimov ordered (order N1896) a former rebel commander naib Saib-Dulla Gekhinski (Saadulla Ospanov) of Chechnya to attack and destroy Ingush settlements near Assa and Fortanga rivers: Dattikh, Meredzhi, Aseri, Shagot-Koch and others. After the losses, the remaining Ingush clans resorted mostly to underground resistance. The Russians built the fortress Vladikavkaz ("ruler of the Caucasus") on the place of Ingush village of Zaur. Russian General Aleksey Petrovich Yermolov wrote in a letter to the Tsar of Russia, "It would be a grave mistake for Russia to alienate such a militaristic nation as the Ingush." He suggested the separation of the Ingush and Chechens in order for Russia to win the war in the Caucasus. In another letter from General Ermolov to Lanski (dated 12 January 1827) on the impossibility of forceful Christianization of the Ingush, Yermolov wrote: "This nation, the most courageous and militaristic among all the highlanders, cannot be allowed to be alienated..." The last organized rebellion (the so-called "Nazran insurrection") in Ingushetia occurred in 1858 when 5,000 Ingush started a fight but lost to superior Russian forces. The rebellion signaled the end of the First Russo-Caucasian War. In the same year, the Russian Tsar encouraged the emigration of Ingush and Chechens to Turkey and the Middle East by claiming that "Muslims need to live under Muslim rulers". It seems that he wanted to liberate the land for Ossetians and Cossacks. Some Ingush became exiled to deserted territory in the Middle East where many of them died. The remainder were assimilated. It was estimated that 80% of the Ingush left Ingushetia for the Middle East in 1865.