Beau Biden died last week after losing battle with brain cancer.
"[He] lived a life that was full; a life that mattered," POTUS says in the wake of VP son's death.
President Obama speaks at opening of Edward M. Kennedy Institute.
Attorney General Eric Holder talks about making history with BET.com.
President Obama and Savannah Guthrie have a beer and a chat about various issues.
More than 40 world leaders participated in the anti-terror march.