The UN\'s humanitarian chief has called on Syria to urgently allow fuel imports for aid deliveries and give access to 10 more aid agencies, the BBC reported Tuesday. Valerie Amos met government officials in the capital, Damascus, to discuss the growing humanitarian crisis. UN workers also needed to freely move into opposition-controlled areas to step up their aid efforts, she said. More than 2.5 million people are in need of humanitarian assistance, according to UN estimates. In addition, more than 500,000 Syrians have fled their homes to neighbouring countries. At least 20,000 people, mostly civilians, have died since the conflict began 21 months ago.