France, March 15 -- On the outskirts of Baidoa, southern Somalia, 38-year-old pastoralist Asha Hassan walks several kilometres each morning to find water for the few goats she has left.

Two years ago, she owned nearly 60 - now just 11 remain.

"The drought does not kill everything at once," she says. "It takes a little today, a little tomorrow, until you realise your whole herd has disappeared."

In large parts of Somalia, drought grips communities that have faced years of failed rains. Wells are shrinking, grazing land has turned brittle and many families rely on aid deliveries.

But a few hundred kilometres to the south, a different kind of disaster is unfolding. In Kenya, heavy rains have triggered floods that have swept through villa...