Testimony Nears End In Tsarnaev Trial

This could be the final day of testimony from witnesses called on behalf of convicted Boston Marathon bomber Dzhokhar Tsarnaev as his lawyers try to spare him from the death penalty.

Before wrapping up, the defense is waiting to find out whether it can put a well-known death penalty opponent on the stand. WBUR's David Boeri joined WBUR's Morning Edition to provide an update.