Zubeidat Tsarnaeva may stay out of American custody because the US and Russia do not have a bilateral extradition treaty, despite efforts by Moscow to negotiate one.
The mother of the two Boston bombing suspects, Zubeidat Tsarnaeva, has become a focus of interest after it emerged that her name had been added to a key terrorist watchlist in 2011 and fresh materials, including wiretaps, handed over to the US by the Russians showed her "vaguely discussing" jihad with her elder son two years ago.
Ms. Tsarnaeva, a naturalized US citizen who moved back to Russia a few years ago, has best been known until now as the most passionate defender of her two sons, Tamerlan and Dzhokhar, up to the point of insisting that they were "framed" because they were Muslims. Now investigators may want to look into what role she may have played, if any, in the radicalization process that may have led her two sons to carry out the Boston Marathon bombing almost two weeks ago.
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