A man in a donkey cart comes wheeling through the dust, carrying two small, silent boys. The sky is overcast. It could rain. It won't. It hasn't for a very long time.
Mohamed Ahmed Diriye is 60 years old, and he's completing the grimmest journey of his life. He set off from a seaside city on the northern edge of Somalia two weeks ago. People were dying. Livestock were dying. He decided to abandon work as a day laborer and flee to the other end of the country, crossing a landscape of carcasses and Islamic extremist-held territory along the way.