Ethiopia and Sudan are warning each other against worsening a historic border dispute. They have fought over the fertile Al Fashaga region for a century. Although Ethiopians have long settled there, Sudan says the area is part of its territory. Skirmishes have increased in the past two months. What's behind the flare-up? - Subscribe to our channel: aje.io/AJSubscribe - Follow us on Twitter: twitter.com/AJEnglish - Find us on Facebook: www.facebook.com/aljazeera - Check our website: www.aljazeera.com/ #AlJazeeraEnglish #InsideStory #Ethiopia #Sudan