Will emergence of HTS in Syria raise level of global terrorism threats? Intelligence chiefs have to decisively analyse the risk posed by group once affiliated to islamists al-Qaida; Intelligence chiefs have to decisively analyse the risk posed by group once affiliated to islamists al-Qaida

Byline: Dan Sabbagh Defence and security editor When Sir Richard Moore, the head of MI6, warned in a speech given 10 days ago that he had 'never seen the world [...]