Most controversy in recent weeks has been about disagreements between the UK and the EU in trade-deal talks. But the latest cause of friction concerns the withdrawal agreement that Boris Johnson signed last year. The government is being accused of reneging on commitments it made on Northern Ireland.
What exactly has the government done?
Under plans to be published tomorrow ministers will outline unilateral measures they say are needed to align the agreement with UK law, regardless of whether there is a trade deal. Specifically these include giving the business secretary power to determine whether to tell Brussels if state aid given to a company in Great Britain affects a company in Northern Ireland, where EU state aid rules will still apply. Ministers would also