Along with mother of another American killed in drone strike
                                
                                
                                    (Newser) -
                                    The families of three Americans killed in US drone strikes in Yemen are suing the government, arguing that it had no right to assassinate them without a trial. The wrongful-death suit was filed yesterday by Nasser al-Awlaki, father of Anwar al-Awlaki, and Sarah Khan, mother of Samir Khan, the  BBC...