What to know

• French President Emmanuel Macron has welcomed British Prime Minister Andy Burnham's reopening of the debate over the United Kingdom's relationship with the European Union, responding to the possibility of the UK eventually rejoining the bloc with a simple mess...S1
• The new British PM said in an interview broadcast earlier on Wednesday that rejoining the EU was among the potential answers to the unavoidable question of what Britain's future relationship with Europe could look like.S2