From NPR News in Washington, I'm Lakshmi Singh.The surviving suspect in the Boston Marathon bombings is communicating to interrogatorsthat he and his brother were not connected to any terrorist groupsbut were motivated, instead, by extremist Islamist beliefs.Dzhokhar Tsarnaev is still in the hospital listed now in fair condition.NPR's Craig Windham reports thatalthough the 19-year-old still can not speak,he has been writing out limited answers to some questions by investigators.Tsarnaev has indicated that he and his brother were not being directed by Islamist militants outside the U.S.,but were instead acting independently.Harvard law professor Alan Dershowitz tells CNN,authorities should consider bargaining away a possible death sentencein order to get more information from Tsarnaev."Everybody wins if this guy exchanges information for a life sentenceand then put in at obscure prison where nobody will remember him."Dershowitz says if Tsarnaev were to be convicted and executed,he would be seen as a martyr by militants.Tsarnaev has been charged with using a weapon of mass destruction and malicious destruction of property.Craig Windham, NPR News, Washington.Three people were killed in the attack during the Boston Marathonand authorities have raised the number of people injured to more than 260.Secretary of State John Kerry is urging NATOto prepare for the possibility that Syria will use chemical weapons in its civil war.