Russia's war in Ukraine has created a perfect storm for global food security, Ertharin Cousin, former head of the UN World Food Programme, tells Ian Bremmer on GZERO World.

And it's not just that the prices of things like corn or wheat have doubled. Transport costs are up because gas is more expensive, while supplies of fertilizer are down for the same reason.

The food crisis is affecting not only those countries that import stuff from Russia and Ukraine but the entire world. Why? Because these are all global commodities.