The execution of Ruqia Hassan marks the fifth journalist who reported on Isis to be killed since October, according to Syrian journalism organisation, Syria Direct. Ms Hassan, who also went by the pseudonym Nisan Ibrahim on social media, was a reporter and activist for Raqqa is Being Slaughtered Silently (RBSS), a group exposing human rights abuses from within Syria. Abu Mohammed, founder of RBSS, tweeted on Saturday that Ms Hassan’s last words were: “I’m in Raqqa and I received death threats, and when Isis [arrests] me and kills me it’s ok because they will cut my head and I have...