President Donald Trump’s turbulent tariffs are projected to cause a sharper slowdown in economic growth in the U.S. than expected.

Donald Trump’s combative trade policies have tipped the world economy into a downturn, with the US among the hardest hit, the OECD said. The Paris-based organization slashed its global forecasts for the second time this year,

Economic growth will slow this year and next as the trade war hampers development in the United States and around the world, the Organization for Economic Cooperation and Development said.