First Minister Carwyn Jones has told AMs that the Welsh Government does "very much welcome what we hope will be a new approach" from Stephen Crabb.
He said Welsh ministers had found the new Secretary of State "pragmatic and reasonable" to deal with during his time as a junior minister at the Wales Office.
Mr Jones added that he hoped the Welsh Government and the UK Department of Transport can move forward on Valleys rail electrification with the help of the new Secretary of State. There's disagreement between the two governments on which of them should pay for the project.
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