In a wide ranging commentary on current US CT strategy a South African academic, Hussein Solomon, includes a reminder that I only vaguely remembered:
..the terrorist challenge the United States was confronted with in the form of Puerto Rican nationalists and militant leftists. Between January 1969 and October 1970, 370 bombings occurred in New York City alone.
For the current situation he writes:
The American resolve remained undaunted and the challenge posed by these violent nationalists and the Weather Underground joined history’s legions of other failures.

Unfortunately this aspect of America is not getting through to those who believe that Americans are essentially weak and will easily give in to blackmail. To the extent that this perception of American weakness persists, it will continue to encourage terrorists to strike American targets in the hope of affecting some change in policy.

This constitutes a missing dimension in US counter-terrorism efforts.
Link:http://icsr.info/blog/The-Missing-Di...nter-Terrorism

He wrote this before the most recent legislation was passed:
the National Defense Authorization Act of 2012. The legislation is supposed to provide the money for the Pentagon to keep America safe.....

The new NDAA effectively allows the military to act on American soil and detain indefinitely anyone, including a US citizen, suspected of terrorism.
Link:http://www.enduringamerica.com/home/...efinitely.html