 Ibiganiro vyintango bitegekanijwe hagati yumushikiranganji wUbwongereza ajejwe Brexit, David Davis, hamwe nuwuserukira Uburaya mu biganiro, Michel Barnier, bikazoshimikira ku burenganzira bwabakozi babanyamahanga, ibibazo bijanye numupaka wa Irlande yo mu buraruko, no kuvugana ku vyo Ubwongereza butegerezwa kwishura UE. 