A.M. Headlines

(CNN): "Navy Yard shooting: What we know and don't know"

(Star-Telegram): "Navy Yard shooter had at least two gun-related incidents in past"

(Politico): "Dianne Feinstein: Congress ‘shirking’ duty on guns"

(New York Times): "Forensic details in U.N. report point to Assad’s use of gas"

(USA Today): "Summers done in by two sets of critics"