On the record: the Boston events reflect acts of domestic terrorism that are Tea Party and militia based.
There is always the possibility that external groups can make events appear to be triggered from within, and also the possibility that domestic groups can attempt to make events appear to be triggered internationally. In addition, in light of recent international events, North Korea must now be included into the mix with Al Qaeda when considering the source of any such public attacks.
Nevertheless, I believe and go “On the Record” stating that the Boston Marathon events are domestically based. I also feel that there are more locations linked to the Boston Marathon, and to the Patriot’s Day holiday, yet to be discovered and uncovered.