@101101000
I know very little about this, but saying that this war is creating a global food crisis seems quite an overstatement to me.
It surely is increasing food prices, specially in Europe.
But it should also be noted that prices were increasing regardless, also before the war.

Regarding food availability: I do not think this war has a large effect on the availability of food.
I know nothing about it, but I did a quick search (and the data I found and my interpretation may very well be wrong.)

https://www.world-grain.com/articles/15532-focus-on-ukraine
https://www.statista.com/statistics/271943/total-world-grain-production-since-2008-2009/
From data in these two websites I calculated that Ukraine produces around 3% of the grain in the world.
Now, if a decrease in 3% in food production is such a big deal to create a global food crisis, then we have much bigger problems than a war...
I do reckon that this might increase prices in extremely poor countries, where denutrition is already a problem and worsen that problem.
This is huge, but it's very far from a global food crisis...