Note: This post expands on my previous article " Oil Crisis Today, Food Crisis Tomorrow " See also ¨A War's Hidden Price" 'explainer video' at bottom of the article. A severely malnourished boy in Hajjah, Yemen. (Hani Mohammed/Associated Press) The Chain — gas, fertiliser, food prices, malnourished children The connection between a missile strike on a Qatari gas plant and a severely malnourished child may not be immediately obvious to many observers of the Iran war. Yet there is a direct chain of cause and effect that could lead, later this year, to a major crisis in child nutrition across Asia and Africa. To understand why the effective closure of a narrow strait threatens the food security of billions, it is necessary to understand the invisible architecture upon which modern agriculture depends — combining nitrogen from the atmosphere with hydrogen from natural gas to produce ammonia, the base from which all synthetic nitrogen fertilisers are created. Wit...