Little war in the Caucasus has big lessons for U.S. and Russia

Small wars can tell you a lot about the biggest geopolitical and military issues of the day. "The conflict over Nagorno-Karabakh may seem like a remnant of the Soviet past in an unfamiliar part of the world. Yet the fierce fighting underway there could actually be a preview of the future." Hal Brands, from Bloomberg, explores how the war between Armenia and Azerbaijan can reveal tensions in more powerful Western countries.