A newly identified spokesman for Isis (Islamic State) has urged sympathisers around the world to carry out a fresh wave of attacks, singling out Turkish diplomatic, military and financial interests as the Islamists' preferred targets. Abu al-Hassan al-Muhajer, whose role as the group's mouthpiece was disclosed for the first time today, also told Isis fighters to stand their ground in the town of Tal Afar, where they are threatened by Iraqi forces. In a defiant online message, Muhajer described Isis' military losses this year as setbacks and said an array of forces in Iraq and Syria had failed to defeat the jihadists. He said Isis supporters would target "the secular, apostate Turkish Government in every security, military, economic and media establishment, including every embassy and consulate, that represents it in all countries of the world". Isis identified Muhajer as its new media spokesman in a recording posted on Al Furqan, a media outlet linked to the group. It gave little information about Muhajer, an obscure figure not widely known in the media or to experts.