US President Barack Obama has announced a $3 billion plan to boost food security and farm productivity in Africa.
US officials say the initiative is aimed at alleviating shortages as world food supplies are being stretched by rising demand in Asia's emerging markets.
Food security is also on the agenda of this weekend's G-8 meeting.
Correspondents say the summit near Washington is being dominated by Europe's debt crisis and a possible Greek exit from the eurozone.
Obama unveiled the Africa plan ahead of his first meeting with new French President Francois Hollande.
He said investments in African agriculture by private US companies, for a total of more than $3 billion would address unacceptable starvation.