ISIS Caliphate celebrates their 1st Joyeuex Anniversarie today.
Since at least 2004, a significant goal of the group has been the foundation of an Islamic state. Specifically, ISIL has sought to establish itself as a caliphate, an Islamic state led by a group of religious authorities under a supreme leader—the caliph—who is believed to be the successor to Muhammad. In June 2014, ISIL published a document in which it claimed to have traced the lineage of its leader al-Baghdadi back to Muhammad and upon proclaiming a new caliphate on 29 June, the group appointed al-Baghdadi as its caliph. As caliph, he demands the allegiance of all devout Muslims worldwide, according to Islamic jurisprudence (fiqh).
When the caliphate was proclaimed, ISIL stated: "The legality of all emirates, groups, states and organisations becomes null by the expansion of the khilafah's [caliphate's] authority and arrival of its troops to their areas." This was a rejection of the political divisions in the Middle East that were established by Western powers during World War I in the Sykes–Picot Agreement.