-War hitting Ukraine, Russia grain production and delivery

-Climbing food prices to spread hunger among poor nations

U.S. Treasury Secretary Janet Yellen will convene a meeting of top international financial officials next week to address a global food-security crisis, with the heads of institutions including the IMF urging action to address dire consequences of record price surges caused by Russia's invasion of Ukraine.

"With over 275 million people facing acute food insecurity, I am deeply concerned about the impact of Russia's war on food prices and supply, particularly on poor populations," Yellen said in a speech to the Atlantic Council think tank in Washington Wednesday.