The week ahead: A big deal

This weekend, British Prime Minister Theresa May is expected to finalise a withdrawal agreement on Brexit with European leaders. But her greatest hurdle is in Westminster rather than Brussels. Can she secure enough votes for her deal in parliament? Anne McElvoy does the 'fuzzy maths'. Also on the show: What does victory look like in a trade war with China? And why Donald Trump is wrong to gloss over the murder of the Saudi journalist Jamal Khashoggi. Christopher Lockwood hosts