By William Tucker
Chief Correspondent for In Homeland Security

One police officer was killed and another wounded as a female suicide bomber attacked a police station in Istanbul Tuesday. The attack followed another strike against the Turkish police that occurred on Jan.1. That attack was carried out by the Marxist DHKP-C group, though no group has yet claimed responsibility for Tuesday’s violence.

By Anthony Kimery, Editor-in-Chief, and Kylie Bull, Managing Editor
Homeland Security Today
Special to In Homeland Security

Given the nature of the deadly attack on the Paris-based Charlie Hebdo newspaper offices last week, US counterterrorism intelligence sources told Homeland Security Today on condition of anonymity that there’s been what they described as “pretty actionable” intelligence in various forms