Members will readily understand that there are significant security, resilience and logistical challenges to be addressed in order to facilitate the summit.
Mae’n siŵr y bydd yr Aelodau’n deall bod heriau sylweddol o safbwynt diogelwch, cydnerthedd a logisteg y bydd angen mynd i’r afael â nhw er mwyn hwyluso’r uwchgynhadledd.