What can be done to make the horn of Africa self- sufficient?

Millions of people across East Africa are looking down the barrel of the worst famine for 60 years.
Thousands of families have picked up their possessions to walk towards what they hope might hold the promise of food. But what they didn't and don't know is that what lies ahead of them is as scorched and barren as their homelands.  http://www.presstv.com/Program/189944.html