Mae Prif Weinidog Cymru, Mark Drakeford a Phrif Weinidog yr Alban, Nicola Sturgeon wedi ysgrifennu ar y cyd at Brif Weinidog newydd y DU yn gofyn iddo ddatgan ar unwaith na fydd yn caniatáu Brexit heb gytundeb.
The First Minister of Wales Mark Drakeford and the First Minister of Scotland Nicola Sturgeon have jointly written to the new Prime Minister asking him to immediately rule out a no deal Brexit.