If these brothers are related to Al Qaeda in Yemen, then I wonder if they shared any connection with Anwar Al-Awlaki, who is considered responsible as the main ideologist of several terrorist attacks in both the US (Fort Hood, Boston) and GB.
As I assume that most American GAF members will know, Al-Awlaki was an highly educated American citizen of Yemeni origins who was blown up in Yemen with a Hellfire missile some years ago. During his time in the US, he became increasingly frustrated with US foreign policy and at some point radicalized. He was also connected to the 'blind sheikh' who serves prison time as of now, and some of the 9/11 hijackers. He posted sermons on Youtube that eventually became popular and inspired others to commit acts of terrorism. He managed more than 60 email accounts to spread his ideas and influence people. Al-Awlaki, in turn, was inspired by Sayyid Qutb, the main ideologist for wahhabism. Qutb wrote his ideas when he served long prison sentences, which is why I am glad that the terrorists in Paris were killed.
Al-Qaeda in the region of Yemen, publishes its own magazine, which can easily be found on the internet. Al-Awlaki was one of the founders of the magazine, in which articles appeared on how to blow up buildings and how to clean your AK-47, or shoot with such a rifle. It would not surprise me at all if these Paris terrorist brothers knew him, or even had met him, depending on at which point they were active in Yemen. But more importantly, they may have been a product of his sick ideas, which is what I would like to know. Even after his death, Al-Awlaki is seen as an influential figure for extremists.