لا بد من صنعاء و ان طال السفر

"Most experts predict Sana'a, the fastest-growing capital in the world at 7% a year, will run out of economically viable water supplies by 2017. That is the same year the World Bank says Yemen will cease earning income from its oil, which currently accounts for three-quarters of the state's revenues."

http://www.guardian.co.uk/environment/2010/feb/26/yemen-qat-water-drought