Tamerlan Tsarnaev, 26, left, and Dzhokhar Tsarnaev, 19. In a rare glimpse at Dzhokhar Tsarnaev’s state of mind, he told his mother he was getting better and that he had a very good doctor, but was struggling to understand what happened, she said

Tamerlan Tsarnaev, 26, left, and Dzhokhar Tsarnaev, 19. In a rare glimpse at Dzhokhar Tsarnaev’s state of mind, he told his mother he was getting better and that he had a very good doctor, but was struggling to understand what happened, she said