Yeppers... That's definitely a Steppe Eagle. Not a species you see that often, as they're usually found in the regions from Romania to southern Russia, and into Mongolia. I can see how the coloring could have got you thinking 'Harris hawk,' though.
Here's a few visual clues. The legs are shorter than a Harris, and the bird also lacks the characteristic chestnut-colored striping across the shoulders. Also, the bird's build is far more stocky than I've ever seen on a Harris, even one that's overweight. As a final hint, the bird's 'gape,' or the yellow portion of the mouth line, extends underneath the eyes. In a Harris, it doesn't go back that far.
Trivia: They're migratory, and they're also the national bird of Kazakhstan (unsurprising, given the importance of eagles to the Kazakh falconers).
