No-fly zone for Syria 'problematic'
Former UN humanitarian chief John Holmes has told HARDtalk proposals to establish humanitarian corridors in Syria sound easy to do, but in reality could "pose enormous problems".
He said it would mean declaring war on President Assad's government and risked creating "Srebrenica-style situations" where civilians were given a false feeling of security.
You can watch the full interview on BBC World News on Tuesday 9 April at 14:30 and 22:30 GMT and on the BBC News Channel on Wednesday 10 April at 00:30 BST.