Heavy fighting breaks out between Azerbaijan and Armenia

(NEW YORK) -- Heavy fighting has broken out between Azerbaijan and Armenia after Azerbaijan appeared to launch a large-scale attack on Armenian territory, triggering a crisis that poses a potentially serious challenge for Russian President Vladimir Putin. Armenia accused Azerbaijan of using heavy artillery, mortars... Read More.

Why Armenia and Azerbaijan are fighting

By PATRICK REEVELL, ABC News(MOSCOW) -- The current military conflict between Armenia and Azerbaijan over the disputed region of Nagorno-Karabakh dates back to the fall of the Soviet Union when the two fought a bloody war over the territory.