>> The fighting has killed hundreds of people, cut off water and electricity supplies and led the United Nations children's agency UNICEF to warn that Yemen is heading towards a humanitarian disaster.
Saudi Arabia, the main Sunni Arab power in the Gulf, launched the air campaign on March 26 to try to contain the Shi'ite Houthis and restore President Abd-Rabbu Mansour Hadi, who has fled Aden for refuge in Riyadh.
The International Committee of the Red Cross and UNICEF plan to fly aid planes into Yemen on Tuesday, but the missions have been delayed as they seek clearance from Arab states waging the air strikes and hunt for planes prepared to fly to Yemen.
http://www.reuters.com/article/2015/04/06/us-yemen-security-idUSKBN0MX0DG20150406
