From the BBC, we find out more about what went on at the meting.
The meeting of ministers from the G20 nations at the UN's Food and Agriculture Organisation headquarters in Rome was requested by France, the current chair of the G20 group of powerful economies.
"Our meeting is a question of life or death for tens of thousands of people," Mr Le Maire said at the start of the meeting, AFP reports.
Bob Geldof and other celebrity activists are urging the international community to come up with more cash.
They accuse some countries - Italy, France, the Arab states and Germany - of contributing too little in proportion to their national wealth.
Mr Le Maire told the BBC said the first aim of the meeting was to co-ordinate the aid and response to the crisis.
"The second goal is also to think about the future and the long-term perspective because what we see here in Africa is that people need to have their own food and to have their own agriculture," he said.
BBC Africa analyst Martin Plaut says many people at the heart of the current disaster - in Ethiopia - have emerged relatively unscathed.
This is because the government in Addis Ababa has such an extensive safety net in place, he says.