The new head of the World Bank said Tuesday that growing divides between rich and poor nations risked deepening poverty in the developing world, at a meeting of G20 finance ministers in India.

Many countries are still recovering from the double blow of the coronavirus pandemic and the fallout from the Russian-Ukranian war -- which hit global fuel and commodity prices.

Climate change, meanwhile, is most painfully affecting some of the poorest countries least able to cope.

Ajay Banga, president of the World Bank, said he feared a lack of progress was in danger of splitting the global economy, to the detriment of the world's poorest.

"The thing that keeps me up at night is a mistrust that is quietly pulling the Global North and South apart at a time when we need to be uniting," Banga told the two-day meeting of finance ministers and central bank chiefs in Gandhinagar, Gujarat state.

"The Global South's frustration is understandable. In many ways they are paying the price for our prosperity," said Indian-born Banga, a naturalized American citizen who took up the bank post last month after being nominated by US President Joe Biden.

"When they should be ascendant, they're concerned promised resources will be diverted to Ukraine's reconstruction, they feel energy rules aren't applied evenly, constraining ambition, and they're worried the grip of poverty will pull down another generation."

The World Bank said it is working to increase its financial capability -- including by raising hybrid capital from shareholders -- to spur growth and jobs, but said the future economy could not rely on expansion at the cost of the environment.

"The simple truth is: We cannot endure another period of emission-intensive growth," Banga said.

Indian Finance Minister Nirmala Sitharaman, chair and host of the get-together, launched talks on Monday by reminding leaders of their responsibility "to steer the global economy towards strong, sustainable, balanced and inclusive growth".

The United States says efforts to reform multilateral lenders such as the World Bank and other regional institutions could unlock USD 200 billion over the next decade.