The U.N. food chief warned Thursday that the world is facing “a global emergency of unprecedented magnitude,” with up to 345 million people marching toward starvation — and 70 million pushed closer to starvation by the war in Ukraine.

David Beasley, executive director of the U.N. World Food Program, told the U.N. Security Council that the 345 million people facing acute food insecurity in the 82 countries where the agency operates is 2½ times the number of acutely food insecure people before the COVID-19 pandemic hit in 2020.

He said it is incredibly troubling that 50 million of those people in 45 countries are suffering from very acute malnutrition and are “knocking on famine’s door.”

“What was a wave of hunger is now a tsunami of hunger,” he said, pointing to rising conflict, the pandemic’s economic ripple effects, climate change, rising fuel prices and the war in Ukraine.

Since Russia invaded its neighbor on Feb. 24, Beasley said, soaring food, fuel and fertilizer costs have driven 70 million people closer to starvation.

Despite the agreement in July allowing Ukrainian grain to be shipped from three Black Sea ports that had been blockaded by Russia and continuing efforts to get Russian fertilizer back to global markets, “there is a real and dangerous risk of multiple famines this year,” he said. “And in 2023, the current food price crisis could develop into a food availability crisis if we don’t act.”

The Security Council was focusing on conflict-induced food insecurity and the risk of famine in Ethiopia, northeastern Nigeria, South Sudan and Yemen. But Beasley and U.N. humanitarian chief Martin Griffiths also warned about the food crisis in Somalia, which they both recently visited, and Griffiths also put Afghanistan high on the list.

“Famine will happen in Somalia,” Griffiths said, and “be sure it won’t be the only place either.”

He cited recent assessments that identified “hundreds of thousands of people facing catastrophic levels of hunger,” meaning they are at the worst “famine” level.

Beasley recalled his warning to the council in April 2020 “that we were then facing famine, starvation of biblical proportions.” He said then the world “stepped up with funding and tremendous response, and we averted catastrophe.”

“We are on the edge once again, even worse, and we must do all that we can — all hands on deck with every fiber of our bodies,” he said. “The hungry people of the world are counting on us, and … we must not let them down.”

Griffiths said the widespread and increasing food insecurity is a result of the direct and indirect impact of conflict and violence that kills and injures civilians, forces families to flee the land they depend on for income and food, and leads to economic decline and rising prices for food that they can’t afford.

After more than seven years of war In Yemen, he said, “some 19 million people — six out of 10 — are acutely food insecure, an estimated 160,000 people are facing catastrophe, and 538,000 children are severely malnourished."

Beasley said the Ukraine war is stoking inflation in Yemen, which is 90% reliant on food imports. The World Food Program hopes to provide aid to about 18 million people, but its costs have risen 30% this year to $2.6 billion. As a result, it has been forced to cut back, so Yemenis this month are getting only two-thirds of their previous rations, he said.

Beasley said South Sudan faces “its highest rate of acute hunger since its independence in 2011” from Sudan. He said 7.7 million people, over 60% of the population, are “facing critical or worse levels of food insecurity.” Without a political solution to escalating violence and substantial spending on aid programs, “many people in South Sudan will die,” he warned.

In northern Ethiopia’s Tigray, Afar and Amhara regions, more than 13 million people need life-saving food, Griffiths said. He pointed to a survey in Tigray in June that found 89% of people food insecure, “more than half of them severely so.” Beasley said a truce in March enabled WFP and its partners to reach almost 5 million people in the Tigray area, but resumed fighting in recent weeks “threatens to push many hungry, exhausted families over the edge.”

In northeast Nigeria, the U.N. projects that 4.1 million people are facing high levels of food insecurity, including 588,000 who faced emergency levels between June and August, Griffiths said. He said almost half of those people couldn’t be reached because of insecurity, and the U.N. fears “some people may already be at the level of catastrophe and already dying.”

Griffiths urged the Security Council to “leave no stone unturned” in trying to end these conflicts, and to step up financing for humanitarian operations, saying U.N. appeals in those four countries are all “well below half of the required funding.”