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– The head of the International Monetary Fund said Thursday that a number of threats could derail the global economic recovery, despite signs that 2017 will be the best year for global growth since 2010.

IMF Managing Director Christine Lagarde warned that global financial leaders need to beware of a number of threats from growing political tensions to increased skepticism about the benefits of globalization and rising levels of income inequality.

Lagarde said it will be important for finance ministers from the IMF's 189-member countries to focus on addressing these threats at a time when the global economy appears to finally be in a sustained recovery following the deep recession caused by the 2008 financial crisis.

"It is not time to be complacent," she told reporters at a news conference Thursday. "Policymakers can use this moment to provide more certainty and provide for the future risks."

Lagarde's warning comes as global financial leaders gathered in Washington for the annual meetings of the IMF and its sister lending organization, the World Bank.

Before Lagarde's warning, foreign finance leaders already had raised questions about how the Trump administration would pursue its "America First" policies and whether they would harm the global economy with rising protectionist trade pressures or market disruptions from increased tensions with North Korea and other nations.

In addition, finance officials from the world's 20 biggest economies, the Group of 20, were meeting Thursday and Friday to discuss the current economic situation.

Treasury Secretary Steven Mnuchin and Federal Reserve Chairwoman Janet Yellen are representing the United States at these discussions.

In an updated economic forecast prepared for these meetings, the IMF projected that the global economy will grow 3.6 percent this year and 3.7 percent in 2018, putting the world economy on track for its best performance since 2010.

While the IMF boosted its outlook for the 19-country eurozone, Japan and China, it trimmed its estimates slightly for the United States compared to the projections it had made in April. It now sees U.S. growth at 2.2 percent this year and 2.3 percent next year, still up from the lackluster 1.5 percent pace of last year.