Within the space of a few years, the World Food Programme has lost half its budget, which amounts to no more than 3.2 billion. Rich countries do not contribute anymore. They have to rescue their banks. That is to say the speculators. The fight against world hunger is secondary. I call this a crime against humanity.
The translation seems fine to me, but I'm a bit unsure of the meaning of "plus" in the second sentence. Surely the rich countries are contributing quite a bit of food since they are the countries with the most food surplus.