IMF Managing Director Christine Lagarde said that as the world still struggles to emerge from the 2008 financial crisis, economies are under threat from tensions involving Ukraine and Russia to inaction in countries that should be driving growth.
Lagarde said the European Central Bank, for example, should consider lowering interest rates further and using unconventional policies to support growth and fight inflation that is too low.
Her comments came in a speech previewing next week's meetings of global finance officials in Washington. The 188-nation IMF and its sister lending organisation, the World Bank, will hold their spring policy meetings.
In her remarks, Lagarde noted that the G-20 finance officials in a February meeting in Australia had committed to pursuing policies that would boost global GDP by more than USD 2 trillion over the coming five years.
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Lagarde said if the G-20 countries can do so, it would "place the global economy on a substantially different and better trajectory from today."
She warned that the recovery could be put at risk by the wrong policy decisions and by rising geopolitical tensions. "The situation in Ukraine is one which, if not well managed, could have broader spillover effects," Lagarde said.
"Unless countries come together to take the right kind of policy measures, we could be facing years of slow and sub-par growth, well below the solid, sustainable growth that is needed to create enough jobs and improving living standards in the future."