The Azerbaijani army has closed in on a key town in the separatist territory of Nagorno-Karabakh following more than a month of intense fighting. Nagorno-Karabakh’s separatist leader said that Azerbaijani troops had advanced within 3 miles of the strategically placed town of Shushi. He urged residents to mobilize all their resources to fend off an attack. Nagorno-Karabakh lies within Azerbaijan but has been under the control of ethnic Armenian forces backed by Armenia since a war there ended in 1994. The latest fighting began Sept. 27 and has involved heavy artillery, rockets and drones, killing hundreds.