Both sides in the rail electrification costs row remain polarised, if you'll forgive the pun, after today's Joint Ministerial Council meeting. A Whitehall source said it seemed the First Minister had 'picked a fight to hide his embarrassment' about an agreement, the existence of which he disputes.
For his part Carwyn Jones has challenged the UK Government to produce any document which would prove a deal. Until now the correspondence has only been semi-leaked but I understand there are moves to try to publish it.
The First Minister says he'll consider paying for some 'incidental costs' but not the full costs. He also told Nick Clegg that one solution would be to devolve responsibility - and the funding - for rail to Wales immediately. Neither side show any signs of backing down.
The Welsh Secretary David Jones says the Welsh Government must stand by an agreement to fund Valley Lines electrification
The Welsh and UK Governments are arguing over who should pay the bill for rail electrification in the South Wales Valleys