sentences:  On 22 September, McKee and a number of other armed, IRA men, arrived at a meeting called by McMillen and tried to oust him as head of the Belfast IRA.They did not succeed, but announced that they would no longer be taking orders from the IRA leadership in Dublin.In December of that year, the IRA split into the Provisional IRA, which was composed of traditional militarists like McKee—and the Official IRA, which was composed of the pre-split Marxist leadership and their followers.