We need to take a proactive approach and we need the UK Government to support Wales, ensuring the whole of the UK is at its strongest at a time of such uncertainty.
Rhaid i ni fabwysiadu agwedd ragweithiol a rhaid i Lywodraeth y DU gefnogi Cymru, gan sicrhau bod pob rhan o'r DU ar ei chryfaf ar adeg o ansicrwydd o'r fath.