The Al-Qaeda branch in Somalia, Harakat al-Shabaab al-Mujahideen, has declined an offer by the terror group Islamic States (ISIS/Daesh) to join the caliphate movement in Middle East and Africa. Abu Ubeidah, the leader of the Shabaab al-Mujahideen Movement, pledged to al-Qaeda leader Ayman al-Zawahiri in 2015. Through a twitter account run by Al-Hijra the...