Can’t remember the exact quote, but there is something in The Omen II about future wars being fought over food (Thorn corporation being involved in agriculture/fertiliser or something).

Last time that I saw it I wondered if the Ukraine conflict might be about control of the “Breadbasket of Europe” as much as anything.

But of course Thomas Malthus was wrong about everything and we just keep need to growing populations.

Control over European food supplies might have been a minor factor in Putin's decision to invade Ukraine but that was secondary to establishing a greater Russian empire with defensible strategic depth. A lot of Ukraine's wheat exports went to Egypt and they have suffered significant food cost inflation due to the war.