PREVIEW-Yemen to seal Saleh's exit in one-candidate vote
Vice president Hadi unchallenged in Tuesday's election, however civil war remains a risk in the country
Political unrest deepens plight of Yemen children
Some 750,000 children will face acute malnutrition in 2012, UNICEF says
Disaster aid faces value-for-money test - survey
Climate change, rapid urbanisation seen playing ever greater role in future emergencies - AlertNet poll of 41 aid groups