The global aid group Oxfam International slammed the G7 on Tuesday for failing to respond anywhere near adequately to a global food crisis that has pushed as many as 323 million people worldwide to the brink of starvation.

The wealthy Group of Seven countries—the United States, the United Kingdom, Canada, France, Germany, Italy, and Japan—acknowledged that staggering figure in a joint statement issued at the close of their latest summit but pledged just USD $4.5 billion in additional funds to fight the emergency, which Russia’s war on Ukraine has exacerbated.

Max Lawson, the head of inequality policy at Oxfam, noted in a statement that “at least $28.5 billion more” is needed from the G7 to “finance food and agriculture investments to end hunger and fill the huge gap in U.N. humanitarian appeals.”

“Faced with the worst hunger crisis in a generation, the G7 have simply failed to take the action that is needed. Many millions will face terrible hunger and starvation as a result,” said Lawson.