source: Vanguard (Nigeria)
actor1: Islamic State (West Africa) and/or Boko Haram - Jamaatu Ahli is-Sunnah lid-Dawati wal-Jihad
actor2: Military Forces of Nigeria (2015-)
location: Damasak
notes: 21 December. Boko Haram attempted to take over a base of the Nigerian armed forces in Damasak. The attack was repelled by the Nigerian military. One civilian killed in the battle