Nigeria's military says it has killed Abu Khalid, a senior Boko Haram commander, along with 10 other militants in northeastern Borno state. Abu Khalid was reportedly the group's second-in-command in the Sambisa Forest. The army says no soldiers were harmed, and operations continue against Boko Haram and ISWAP hideouts in the North East. Jonathan James Lyamgohn, our correspondent in Nigeria, explains more.