article_snippet.sent: The defense argues that he was influenced and enlisted by he older, self-radicalized brother to commit acts of terror.
article_snippet.sent: During this time, Tamerlan Tsarnaev began Tamerlan Tsarnaev conversion to radical Islam.
article_snippet.sent: Then, according to investigators, Tamerlan Tsarnaev began filling Tamerlan Tsarnaev younger brother's head with a hatred toward the West.
article_snippet.sent: The radicalization of Zubeidat Tsarnaev .