“Ni fydd yr UE yn fodlon gwrando ar alwadau i ailddechrau trafod y Cytundeb Ymadael, ac mae’r honiadau y gallem ymadael heb gytundeb a dal i allu masnachu â’r UE heb dariffau wedi cael eu gwrthbrofi.
“The EU will not simply cave in to demands to re-open the Withdrawal Agreement, and claims that we could both leave without a deal and still benefit from tariff-free trade with the EU have been disproved.