STORY: Early on Wednesday, President Vladimir Putin said Russia and the developing world had been "cheated" by a UN-brokered Ukrainian grain export deal, vowing to look to revise its terms to limit the countries that can receive shipments.

In his strongest comments on the topic since the deal was reached in July, Putin warned of a global food crisis if the situation was not addressed and said he would contact Turkey's President Tayyip Erdogan to discuss amending the deal to restrict which countries can receive shipments.

U.N. data shows that Turkey, which is not part of the EU, has been the most frequent single destination for shipments from Ukraine, with cargoes going to China, India, Egypt, Yemen, Somalia and Djibouti as well.