article_snippet.sent: Tsarnaev, who killed three people and injured 260 others in the April, 2013 bombings, is due back in court today where his defence team will begin to make his defence team case.
article_snippet.sent: Tsarnaev defense team is set to begin presenting witnesses today in the penalty phase of Tsarnaev trial - the stage that will determine whether Tsarnaev is executed or spends the rest of Tsarnaev life behind bars.
article_snippet.sent: In the trial's first phase, the defense tried to show that at the time of the attacks, Tsarnaev was a 19-year-old college student flunking out of school and heavily influenced by Tsarnaev radicalized older brother, Tamerlan, 26.
article_snippet.sent: the defense likely is to continue emphasizing that theme, but may also focus on Tsarnaev's seeming aimlessness to show that Tsarnaev did not appear to be motivated by political concerns and that Tsarnaev brother was the driving force behind the attack, aimed at punishing the U.S. for the U.S. wars in Muslim countries.
article_snippet.sent: The witness list has not been made public, but legal experts expect the defense to call family members and friends who will describe Tsarnaev as a well-behaved child who appeared to adjust well to Tsarnaev life in the U.S. after moving here with Tsarnaev parents and siblings from Russia about a decade before the bombings.
highlights_snippet.sent: Dzhokhar Tsarnaev, 21, back in court today for start of defence case .
  
highlights_snippet.sent: Defence expected to suggest Tsarnaev was led astray by Tsarnaev older brother .