The UK as part of the EU has developed shared values for human rights and fundamental freedoms, democratic principles, the rule of law and support for non-proliferation.
Mae’r DU fel rhan o’r UE wedi datblygu gwerthoedd ar y cyd ynglŷn â hawliau dynol a rhyddidau sylfaenol, egwyddorion democrataidd, rheolaeth y gyfraith a chefnogaeth i atal twf arfau niwclear.