Following are five big themes likely to dominate thinking of investors and traders in the coming week and the Reuters stories related to them.

1/BREXIT MAY DAY With less than 80 days to go until Britain leaves the European Union, the path to Brexit winds to a critical crossroads on Tuesday when lawmakers vote on Prime Minister Theresa May's withdrawal deal. The agreement, which May and EU leaders say cannot be renegotiated and is the only one available, will almost certainly be rejected. If so, uncertainty, paralysis and the likelihood of a disorderly 'no deal' Brexit will rise.

Volatility is nothing new to sterling, Friday being a microcosm of how the FX market is playing Brexit. A media report that Britain's departure could be delayed sent the pound shooting up nearly a cent to its highest since Nov. 29, then minutes later May's spokeswoman ruled out any delay and the pound fell right back again. One-month implied options volatility in sterling is much higher than euro vol, and that's unlikely to change any time soon. All eyes on the big vote in Parliament on Tuesday and for sterling, moves below $1.25 or above $1.30 are both on the table.