The body is leaving its projections for global output growth unchanged at 3.5 percent this year and 3.6 percent in 2018.
They are trying to find an alternative trade pact following the withdrawal of the United States, reports say.
The deal will cover a market of 637 million people -- and more than a quarter of the global economy.
Japanese Foreign Minister Fumio Kishida is set to finalize a broad agreement on a free trade deal with the European Union this week, before its expected official announcement.
U.S. President Donald Trump has been nothing if not open about his pledges to take a different tack on the world stage, putting "America First" and downplaying long-standing multilateralism.
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The world economy will pick up speed this year and next, helped by steadier commodity prices and a pickup in global trade, the World Bank said Sunday.
Shares in Taiwan closed lower but remained above the 10,000-point mark on Wednesday as the market resumed trading following the four-day Dragon Boat Festival holiday.
Seven wealthy democracies ended their summit Saturday in Italy without unanimous agreement on climate change, as the Trump administration plans to take more time to say whether the U.S. is going to remain in the Paris accord on limiting greenhouse gas emissions.
London's benchmark FTSE 100 index dipped Thursday as investors awaited fresh growth and inflation forecasts from a Bank of England expected to announce that it is holding interest rates at a record low 0.25 percent.