John Kerry and his Iranian counterpart resumed talks in Switzerland and Boston hits a new record for snow fall, reports CNBC's Sue Herera.» Read More
Former FBI Assistant Director Chris Swecker says his sources confirmed there was shrapnel in the explosives that went off at the Boston Marathon.
Fformer Chief of Security of the United Nations Michael McCann, discusses which tactics he thinks are most in need of investigation in the Boston Marathon explosions.
One of the 2 people killed at the explosions at the Boston Marathon was an 8-year-old child, reports NBC's Katie Davis.
Boston Reporter Jackie Bruno offers insight on the site of where the explosions happened near the finish line of the Boston Marathon. "This is not what Boston is like after the marathon, it is a ghost town," she says.
Michael Holland of Holland & Company, offers insight on the reaction from security after the explosions near the finish line at the Boston Marathon.
Ken Timmerman, Foundation for Democracy in Iran speculates on who might have caused the explosions in Boston.
Tony Nash, Managing Director of IHS, speaks about the state of the global economy and what impact the Boston marathon bombings along with weak data from U.S. & China will have on investor sentiment.
Max Abrahms, Hopkins fellow and terror expert, discusses questions he has surrounding who might have caused the explosives at the Boston Marathon.
A moment of silence was called in the House for the explosions at the Boston Marathon.
Tony Roman of Roman & Associates discusses what the incident in Boston says about security measures in the U.S.
Former assistant secretary of defense Frank Gaffney discusses the information at hand in the Boston explosions, and what it means that no one has taken responsibility.
Former FBI assistant special agent Don Borelli discusses the big job ahead of officials investigating the Boston Marathon explosions.
CNBC's John Harwood reports the White House is now handling the Boston explosions as an "act of terror;" and former assistant secretary for homeland security Robert Liscouski, weighs in.
Stratfor's vp for intelligence Fred Burton offers insight on the 2 explosions near the finish line of the Boston Marathon.
A Boston Marathon spectator describes what he heard as 2 explosives went off near the finish line, and the security that took action thereafter.
Former Secretary of Homeland Security Tom Ridge says the explosives at the Boston Marathon is "a pretty basic device," and discusses the importance of gathering information to finding the perpetrator.
CNBC's John Harwood recaps what President Obama said on the investigations on the 2 explosions in Boston today.
President Obama addresses the 2 explosions near the finish line of the Boston Marathon. "We still do not know who did this, and we will hold them accountable," he says.
A runner from the Boston Marathon explains the 2 explosions she heard near the finish line.
CNBC's Bertha Coombs and NBC's Pete Williams offer the latest reports on the 2 explosions that occurred near the finish line of the Boston Marathon.