I think that most of the famine and starvation problems which are referred to as "world hunger" are generally engineered or the natural consequences of crisis in law and order, its not "natural" and its not like an earthquake or volcano or tsunami or anything of that kind, there's been campaigns by development theorists and academics from the developing world or southern hemisphere and the developed or northern hemisphere to arrest and prosecute officials who have presided over famine and starvation in the same way that war crimes are prosecuted. However, given that the international community is pretty sluggish about human rights violations and war crimes when its blatantly obvious, ie Syria, Rwanda, Balkans, I doubt that its going to get into gear about famine and starvation.
There are also food security policies which the US and EU use which are blocked to the African Union by global free trade agreements, usually tied to debt repayments to the world bank or IMF restructuring of economies, environmental legislation is used in the same manner too preventing some forms of industrialisation which has been tied to desertification, deforestation and climate change.
Some of the proposals for changes in trade which would result in developing/southern hemisphere nations becoming the worlds agricultural producers are understandably being resisted by the developed world because of concerns about quality and food safety, if those regions are to be the agrarian sector then they need to cease being lawless or the shortage/starvation problems are just going to spread worldwide or perhaps poisoning and poor quality food resources is going to become endemic instead. There are also the problems, once experienced in nations like Ireland immortalised in the song Fields of Athenry, of producer nations producing cash crops for export in order to buy food resources and import them, so people starve amidst plenty, this is a risk with ethanol production for fuel, so nations could produce for fuel but have no domestic food stock of their own.
Some of those problems would be eliminated by food security policies being permitted by trade organisations, the EU has produced so called wine lakes and meat mountains through subsidised farming, why not let the African Union do something similar? And each trade block, US, EU, AU could see to its own agri-fuel production.