Boko Haram militants killed at least 23 security personnel in an attack on a military base, officials from Chad said on Tuesday. The attack took place on Monday night against a military base on the shores of Lake Chad, which sits on the tripoint of Chad, Niger, Nigeria and Cameroon. Dozens more Chadian soldiers were injured in the attack, which was eventually repelled. "Once again, the nebulous Boko Haram terrorist group carried out a cowardly attack last night on our military base at Barka Tolorom," Chadian President Mahamat Idriss Deby Itno said in a Facebook post on Tuesday. "We will continue the fight with renewed determination until this threat is completely eradicated." Boko Haram active around Lake Chad Although the jihadist group  was started in northern Nigeria, Boko Haram has expanded into Lake Chad and beyond over the past decade. According to the United Nations, the group has killed several thousand people and displaced millions.…