My interests shift quite a bit, but in terms of region I am stuck on the Middle East/North Africa for now. Before that, it was the Orient. Humanity has been in conflict so often that it's quite hard to find a 'favourite' time period to follow for wars. Modern wars, anywhere from WW1 to present, interest me much more than wars that happened in the past hundreds/thousands of years. It's good to get some historical context, but other than that, I'm more concerned with my world as it's happening in this modern age.