Heddiw, mae Llywodraeth Cymru wedi cyhoeddi dogfen fanwl, seiliedig ar dystiolaeth, sy’n trafod pam y mae Llywodraeth Cymru o’r farn mai drwy barhau’n aelod o’r Undeb Ewropeaidd (UE) y gellir diogelu ein buddiannau orau.
The Welsh Government has today published a detailed, evidence-based account of why Welsh Government believes our interests would be best served by remaining in the EU.