Why has Theresa May fired David Jones?

I ask that question as I do not know the answer to it. David Jones has always struck me as a very able minister. He is a former Secretary of State for Wales. He is an experienced operator, and along with David Davis and colleagues, has managed to build-up a department from scratch in just under a year.

Jones is also a Leaver. He was very effective in Wales during last year’s EU Referendum. What is Theresa May up to? After performing so badly at the polls last week, the fears of many that she is preparing to water down Brexit will resurface. After Jones’ sacking, the optics are bad.

Has she learned anything from her humiliation last week?