The Guardian asks :
Is climate change to blame for famine in the Horn of Africa?
It’s impossible to answer with a simple yes or no – but here’s a summary of what we think we know so far
The current drought conditions have been caused by successive seasons with very low rainfall. Over the past year, the eastern Horn of Africa has experienced two consecutive failed rainy seasons. According to surveys of local communities, this is part of a long-term shift. Borana communities in Ethiopia report that whereas droughts were recorded every six to eight years in the past, they now occur every one to two years.
http://www.guardian.co.uk/
Only 18,000 newspaper articles about drought in Africa.

http://trove.nla.gov.au/newspaper/result?q=africa+drought