I think there is a reason he announced this now. Its in preparation for this event on October 10, 2015 in DC:
https://www.justiceorelse.com/
Million Man March. It would make sense that he would do this when there are a million black men marching and this is a date that keeps popping up in both BPP and ISIS circles.
You know, it'd be ironic as hell if they got their instructions mixed up, and while the Million Man March was going on, Iran set off a small you-know-what in their midst...
October 10 is also the anniversary of the Battle of Tours