UK - The Brexit saga has taken another unexpected twist after Commons Speaker John Bercow said he would not allow another vote on Theresa May's withdrawal deal unless MPs were asked a different question. Explaining his decision, he cited "strong and longstanding" parliamentary precedents dating back to 1604.  

He gave a number of examples where predecessors of his had enforced this convention, the most recent being in 1920.

His dramatic intervention, described as a "bombshell" by many newspapers, came at a crucial moment in the process, with 10 days to go before the UK is scheduled to leave and the prime minister set to ask other European leaders for extra time to address the current deadlock. The timing of Mr Bercow's announcement could not have been more politically explosive.