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The hellish war in Ukraine has set loose another apocalyptic horseman: famine. The swiftness of many deaths by combat has obscured the many more deaths that may come slowly, not from war but from the interaction of markets for food and oil.
Despite an emerging transition away from fossil fuels, the force that still drives the flowering grains of the world's breadbaskets is oil. Oil still powers the engines that plant and harvest, the fertilizer that makes grain grow and the trucks and barges and ships that deliver food to the hungry.
These markets together define the capacity of much of the world to feed itself.
Nitrogen fertilizer, for example, is mainly produced from ammonium nitrate derived from natural gas. Other petroleum-based products fuel herbicides and pesticides protecting crops from yield losses due to weeds and insect infestation.
Disruptions in supply chains thus affect food grains directly but also create delivery issues with oil-based plant nutrients and chemicals.
While American aid to Ukraine has increased from hundreds of millions of dollars to a proposed $33 billion in military and humanitarian assistance, and while NATO's resolve has stiffened in the face of Russian aggression and atrocity, none of this responds directly to the combined food and energy challenges that are leading to famine.