UN peace envoy on surprise trip to Syria (2) The UN's Syria envoy Staffan de Mistura was in Damascus on Tuesday on a surprise visit to discuss the ceasefire plan and efforts to renew peace talks later this month. Addressing journalists after his meeting with Syria's Foreign Minister Walid Muallem, he said the main issue discussed was "unhindered" humanitarian access to all besieged areas. IMAGES AND SOUNDBITES