EU still open to Britain changing mind on Brexit

Leaders of the European Union institutions weighed into a new British debate on whether to hold a second referendum on Brexit by saying on Tuesday that Britons would be welcome to stay in the EU.Prime Minister Theresa May and her main opponent Jeremy Corbyn have ruled out giving voters a chance to approve whatever withdrawal treaty is agreed with Brussels before Britain leaves the bloc in March 2019.Updating the European Parliament on a summit he chaired last month at which EU leaders agreed to