Many Hizb ut-Tahrir 'graduate' and join Hamas IJ AQ et al so as to maintain the facade of Hizb ut-Tahrir innocence. However given the strict initiation and admissions policies it is inconceivable that so many violent perpetrators simply passed thru a revolving door Hizb ut-Tahrir. Or that Hizb ut-Tahrir is unaware of what individual member's 'independent' activities. If one looks closer you will find to many common themes and links such as in financing thru the same charities as Hamas IJ AQ et al. The frequency of so many constant overlaps cannot be seen as a coincidence as Hizb ut-Tahrir likes to argue. It is mathematically impossible.
Nusra Front in Syria says it has detained U.S.-trained rebels (Reuters)
from the article: A 'rising force'