Complex sentence: On 29 June 2014, ISIS announced the establishment of a caliphate, al-Baghdadi was named its caliph, to be known as Caliph Ibrahim, and the Islamic State of Iraq and the Levant was renamed the Islamic State (IS).
Split into simpler sentences: On 29 June 2014, ISIS announced the establishment of a caliphate. Al-Baghdadi was named its caliph, to be known as Caliph Ibrahim, and the Islamic State of Iraq and the Levant was renamed the Islamic State (IS).