Head of the International Rescue Committee arrives in Sanaa Yemen is "now the world’s largest humanitarian crisis" says head of the International Rescue Committee David Miliband upon his arrival in Sanaa for a three-day visit to war-torn Yemen. Miliband said he will go "as close to Hodeida as possible", the key port city which is a major battleground in the war between Yemen's Saudi-backed government and Huthi rebels. IMAGES AND SOUNDBITES