Ansaru militants have claimed responsibility for shooting dead a Muslim cleric known for promoting peaceful coexistence between Christians and Muslims, raising fresh concerns about the threats facing religious voices who challenge extremist ideologies in Nigeria.   Sheikh Yahaya Ibrahim Masussuka and his friend, Adamu Abubakar, were killed Monday evening, Oct. 26, in Dutsin-Ma Local Government…The post Ansaru Militants Claim Killing of Muslim Cleric Who Preached Peace with Christians first appeared on International Christian Concern.