Do think Boston Marathon bomber Dzhokhar Tsarnaev's apology was sincere?

Shortly being sentenced to death, Boston Marathon bomber Dzhokhar Tsarnaev acknowledged his involvement in the attacks and apologized for his actions.

Tsarnaev said: "If there is any lingering doubt, let there be no more. I did it, along with my brother...Now, I am sorry for the lives that I've taken, for the suffering that I've caused you, for the damage that I've done. Irreparable damage...Allah said in the Quran that no soul is burdened with more than it can bear, and you told us just how unbearable it was, how horrendous it was, this thing I put you through...I also wish that far more people had a chance to get up there (and speak), but I took them from you...I ask Allah to have mercy on me, my brother and my family." Addressing the survivors who packed the courtroom (many who spoke earlier), Tsarnaev said he prayed for Allah "to bestow his mercy upon the deceased, those affected in the bombing and their families. I pray for your relief, for your healing, for your well-being, for your strength."

CNN reports that Tsarnaev spoke in "a low, slightly accented voice, he expressed remorse but never turned to face his victims." Survivor response to the apology has been mixed. Do you think Tsarnaev's apology was sincere?

Boston Marathon Bomber Dzhokhar Tsarnaev. Source: U.S. Attorney’s Office in Boston/Handout via Reuters