Boko Haram fighters disguised as herders killed at least 20 Cameroonian troops in a Tuesday morning raid on the Nigerian border town of Wulgo, local security sources and residents told AFP.
Cameroonian troops are commonly stationed across the border in Nigeria as part of anti-jihadist operations around Wulgo, which is near the volatile Lake Chad -- home to both Islamic State and Boko Haram fighters.
