Headlines: Michel Barnier, the European Union’s Brexit negotiator, wants British prime minister Theresa May to work on a more ambitious future relationship for the U.K. and the bloc rather than attempt changes to the back-stop.

The U.S. government shut-down is causing delays for the Trump administration’s agenda of deregulation and other pro-business measures, raising concerns about long-term consequences for some companies.

At the World Economic Forum in Davos, the International Monetary Fund said the global economy is weakening faster than expected as trade wars and financial market volatility undermine the investment climate.

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