And Russia is probably not playing with the grain shortage. They had an agreement in place to let the country they are at war with sell grain because it's so critical.
It's probably more complicated than that and a tangent.
Russia certainly used the risk of hunger as a weapon to increase political pressure on Ukraine on the international level. Fortunately that attempt didn't play out and Russia was instead pressurized to make concessions. But they stopped the agreement the same moment they thought that it is not beneficial for them anymore. But this is just a side topic and was given as an example how the African incapacity to keep up with the population growth has wider geopolitical implications.
There was a time when HN was more conversational than it typically seems these days. It gets hard to assume someone is making conversation rather than making an argument when the default seems to be the latter.