It is essential that the Welsh Government, and the other devolved governments, are part of the negotiations to shape a future that works for all parts of the UK.
Mae’n hollbwysig bod Llywodraeth Cymru, a llywodraethau datganoledig eraill, yn rhan o’r negodiadau i lywio dyfodol sy’n gweithio i bob rhan o’r DU.