The Iran war and the consequent blockade of the Strait of Hormuz has triggered a severe "fertiliser squeeze" as soaring energy costs and export disruptions push farmers' affordability to a four-year low. The Iran war is threatening international food security as production costs jump and vital export routes are severed. In particular, a supply squeeze on fertiliser has already caused farmers' affordability to reach a four-year low. That is the warnin... [5603 chars]