Video released showing al-Qaeda supporters 'declaring a caliphate ' in Yemen . It comes after months of fighting between several groups in the country . al-Qaeda emerged in Yemen last year , and has carried out suicide bombings . Sunni al-Qaeda may take hold as Shi'ite rebels fight government and ISIS .
Video released showing ISIS supporters 'declaring a caliphate ' in Yemen . It comes after months of fighting between several groups in the country . ISIS emerged in Yemen last year , and has carried out suicide bombings . Sunni ISIS may take hold as Shi'ite rebels fight government and al-Qaeda .