Burkina Faso’s U.S.-trained military forces “summarily executed” at least 223 civilians, including dozens of children, across several villages in the northern Yatenga province in late February. That’s according to a new report by Human Rights Watch, which says the extrajudicial mass killings are part of a widespread military campaign to exterminate residents accused of collaborating with Islamic militants. Executive Director of Human Rights Watch Tirana Hassan said in a statement, “The repeated failure of the Burkinabè authorities to prevent and investigate such atrocities underlines why international assistance is critical to support a credible investigation into possible crimes against humanity.”