Incidentally, Russia freed my country (Bulgaria) from the oppression of the Turkish (aka Ottoman) empire 300 years ago. Today, Russia again seems to be the only country with the will AND capability to fight ISIS (Daesh).
Historians in the English-speaking world have a habit of gushing about the early Islamic caliphate, the Umayyads in al-Andalus, and the Ottoman Turks. (Indeed, Carly Fiorina regards the Ottomans as "the greatest in the world" -- http://www.examiner.com/article/fiorina-sings-the-praises-of... .) The fashion for this began with Jewish Orientalism in the 19th century, and with the point that the Umayyads in particular were pretty tolerant of the Jews; but this obscures the fact that the Ottomans and the others were _vile_ -- routinely impaling and crucifying, and slave-trading (for both sexual and other purposes) on a really enormous scale.
If 300,000 slaves imported mean that the American South was indefensible, what does that make the Ottomans, who practically depopulated the Caucasus because Caucasian men were brave and Caucasian women were beautiful? (And this is without even mentioning their similar depredations in the Balkans, and in Africa.)