"Famine in the 21st century is a preventable crisis. G7 leaders can and must use their influence to help stop it. Waiting for an official declaration of famine before taking action could result in hundreds of thousands of deaths." There will be punishment and a moral outrage." Griffiths said in a statement on Wednesday.

Conflict is fueling hunger in many corners of the world. But nowhere is the choice between inaction and oblivion so clear as in Gaza and Sudan, he said, Xinhua news agency reported.

In Gaza, half the population, or more than one million people, are feared to face death and starvation by mid-July; In Sudan too, at least 5 million people are on the verge of starvation; In both Gaza and Sudan, intense fighting, unacceptable restrictions and underfunding are preventing aid workers from delivering the assistance needed to prevent mass starvation, he said.

Griffiths called on G7 countries to immediately use their considerable political influence and financial resources to ensure aid organizations can reach all those in need.

"But most of all, the world must stop feeding the war machines that are starving the civilians of Gaza and Sudan. Now is the time to prioritize diplomacy that gives people back their future. And tomorrow, The G7 is on top," he said.