English: Well, I do think that there are two main elements to that question. The first element is the question of structure: what is the correct structure for the process of fulfilling our role as a Government? I think that the first point is co-operation in detail between officials, where the greatest part of the work is done, and that that happens in the context of all the Governments being treated equally in that process. Then a process of agreement between the Governments on those views and the ministerial roles within that. And then, the third element of this question of process and structure is the role in the process of negotiating itself. That has happened in the past, of course, in negotiations with the European Union while we were a member. So, a clear structure is needed for that to happen. That's the first point. But the structure in itself isn't enough. The question is: what is the purpose of the structure, what is the aim and objective of those negotiations? The two principles that we've been calling for are core principles still. That is, that there should be some sort of attempt on the part of the UK Government to ensure an agreement. And certainly, when we're talking about devolved power and responsibilities, there should be a commitment that they should not usually proceed with a negotiating position without our agreement. So not a veto, but perhaps a parallel to the principle that's behind the Sewel convention in that context. More than a good relationship is needed for those principles. We need a statement and a clear agreement that those are the principles that are the basis of that relationship so that we as a Government can come here to the committee and to the Chamber and say, 'This is the commitment that has been made and this is the basis for the negotiations to proceed.' That is a very important point in terms of scrutiny and in terms of assurance for the basis of that relationship.
Welsh: Rwy'n credu bod dau brif elfen i'r cwestiwn hynny. Yr elfen gyntaf yw'r cwestiwn o strwythur: beth yw'r strwythur iawn ar gyfer y broses o gyflenwi ein rôl ni fel Llywodraeth? Rwy'n credu bod hynny'n golygu, yn gyntaf, cydweithio mewn manylder rhwng swyddogion, lle mae'r gwaith, gan fwyaf, yn digwydd, wrth gwrs, a bod hynny'n digwydd o fewn cyd-destun bod y Llywodraethau i gyd yn cael eu trin yn hafal yn y broses honno. Wedyn, proses o gytuno rhwng y Llywodraethau ar y safbwyntiau hynny a rôl weinidogol yn hynny hefyd. Ac wedyn, y drydedd elfen o'r cwestiwn yma o broses a strwythur yw rôl yn y broses o negodi ei hunan. Mae hynny wedi digwydd yn y gorffennol, wrth gwrs, mewn negodiadau gyda'r Undeb Ewropeaidd tra ein bod ni wedi bod yn aelod. Felly, mae angen strwythur clir i hynny ddigwydd. Dyna'r pwynt cyntaf. Ond, dyw'r strwythur ar ei ben ei hunan, wrth gwrs, ddim yn ddigon. Y cwestiwn yw: beth yw pwrpas y strwythur, beth yw gôl ac amcan y trafodaethau hynny? Mae'r ddwy egwyddor rŷm ni wedi bod yn galw amdanyn nhw yn egwyddorion craidd o hyd, hynny yw, dylai fod ymgais ar ran Llywodraeth y Deyrnas Gyfunol i sicrhau cytundeb. Yn sicr, pan rŷm ni'n sôn am bwerau a chyfrifoldebau datganoledig, ni ddylen nhw, yn arferol, symud ymlaen gyda safbwynt negodi heb ein cytundeb ni. Felly, nid veto, ond efallai paralel i'r egwyddor sydd y tu ôl i gonfensiwn Sewel yn y cyd-destun hwnnw. Mae angen mwy na pherthynas dda yn yr egwyddorion hynny. Hynny yw, mae angen datganiad a chytundeb eglur mai dyna'r egwyddorion sydd wrth wraidd y berthynas, fel ein bod ni fel Llywodraeth yn gallu dod yma i'r pwyllgor ac i'r Siambr a dweud, 'Dyma'r ymroddiad sydd wedi cael ei roi, a dyma sail y trafodaethau.' Mae hynny'n bwysig o ran craffu ac o ran sicrwydd i sail y berthynas.