Terrorist groups are destabilizing countries all over the continent. Subscribe to our channel! http://goo.gl/0bsAjO Islamist terrorist groups have found a new home and it's not in the Middle East -- it's in Africa. Specifically, the Sahel, a band of territory in West Africa between the Sahara desert and the savannah. Since the early 2000s, Islamist extremist groups have increasingly strengthened their base here -- training fighters, raising money, and launching a massive number of attacks. Some are linked to al-Qaeda and other Islamic State. This is throwing these already weak countries into crises and making the region one of the most dangerous in the world. To truly understand the international conflicts and trends shaping our world you need a big-picture view. Video journalist Sam Ellis uses maps to tell these stories and chart their effects on foreign policy. Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com/. Watch our full video catalog: http://goo.gl/IZONyE Follow Vox on Facebook: http://goo.gl/U2g06o Or Twitter: http://goo.gl/XFrZ5H