Ym mis Ionawr cyhoeddais Bapur Gwyn Llywodraeth Cymru, ar y cyd â Phlaid Cymru, "Diogelu Dyfodol Cymru". Mae'n amlinellu ein hagenda a'n blaenoriaethau ar gyfer Cymru wrth i'r Deyrnas Unedig baratoi i ymadael â'r Undeb Ewropeaidd (UE). Dywedais bryd hynny mai dechrau'r sgwrs oedd hyn, yn hytrach na'i diwedd, ac fe ddywedais fy mod yn bwriadu cyhoeddi cyfres o ddogfennau polisi pellach er mwyn ymestyn y drafodaeth yma yng Nghymru ac ar draws y Deyrnas Unedig (DU).
The Welsh Government readily accepts that, after we have departed the EU, there may be a need to develop binding UK-wide policy frameworks, in some devolved areas, in order to prevent friction within our own internal UK market. The right way to do this will be through the UK government and devolved administrations sitting down together to discuss and agree frameworks. The Welsh Government will be a willing partner in such an approach. We will not, though, acquiesce in any attempt by the UK Government arbitrarily to constrain powers already devolved.