The International Monetary Fund (IMF) has warned that escalating trade tensions could undermine global economic growth.
In a new report on the world economic outlook, the IMF also warns of risks from a no-deal Brexit.
For the world economy, the IMF is now predicting growth of 3.5 per cent in 2019.
In October, it forecast 3.7 per cent.
For the UK, the report predicts growth of about 1.5 per cent this year and next, but it also says there is substantial uncertainty around that figure.
The global figure represents weaker growth than last year.