Former IMF chief Christine Lagarde said President Donald Trump's trade offensive against China could slash global economic growth and she critiqued his Twitter habits in an interview with US television programme 60 Minutes.
Lagarde, who takes over leadership of the European Central Bank on November 1, called for world leaders to act like grownups and negotiate a solution to the trade conflicts, and called for "rational decisions."
Newly freed from the restraints of her previous post, where she would have had to guard her language, Lagarde said, "market stability should not be the subject of a tweet here, a tweet there."
In the interview, she warned that Trump's trade war with China will give the global economy "a big haircut."