Matthew Quanstrom:, external Ireland are playing great but Wales only need to kick out the mistakes and they could have this.

Bedwyr Gullidge:, external Worst first half performance by Wales since Ireland last year. Too many errors, indiscipline and two lost lineouts!

Joe Morgan:, external Are Ireland reminding anyone else of 2002/3 England? Ten man rugby.

Martyn Williams
Former Wales captain on BBC One

"That's a smart kick again into the right corner - whether it's Jonathan Sexton or Brian O'Driscoll with the kick it's very clever play.

"That penalty's all from the pressure built by the previous driving line-out."

Image source, AFP

That's four out of five penalties for Jonathan Sexton. Ireland have started from where they left off in the first half. This is impressive by Joe Schmidt's team. Wales look a shadow of the team that has won the title two years running.

Paul O'Connell with an immense catch from an Ireland line-out. The Ireland captain has provided a safe pair of hands. His team-mates are buzzing from his presence.

New half, same mistakes by Wales. Rhys Priestland is charged down but the hosts are unable to take advantage.

Ben Dirs
BBC Sport at the Aviva Stadium

"Maybe there is something in the 'Lions effect' theory after all. Wales were completely out-hustled by Ireland in that first half and will have had the mother of all rollockings in that changing room."

Phillip Matthews
Former Ireland captain on BBC One

"If Ireland can continue the momentum they had in the first half it's going to be very difficult for Wales to come back - this next 20 minutes is going to be absolutely crucial."

Out come the players for the second half. Ireland's have a spring in their step. The Wales players are not so fast.

Jonathan Davies
Former Wales fly-half on BBC One

"The stats don't make good reading for Wales - nine missed tackles, eight penalties conceded, three turnovers. Their game plan was to get their big backs like Alex Cuthbert, George North and Jamie Roberts running at the Irish defence but they haven't been in the game at all. Wales need to cut out the mistakes, get their line-out going, get some momentum and build some pressure."

Tom Fordyce
Chief sports writer at Murrayfield

"Early optimistic sunshine in the Scottish capital has turned to stinging showers and now cold rain on a battering wind. A day for warm fires and hot toddies, not fingertip passing and champagne rugby - but when was it ever different in a Six Nations February rendezvous?"

Jonathan Davies
Former Wales fly-half on BBC One

"It's been a masterclass by Ireland fly-half Jonathan Sexton - his variety of kicking has been great. His forwards have given him the platform and he's responded magnificently. He's played the game in the right areas and he has absolutely dominated the first half."

Keith Wood
Former Ireland hooker on BBC One

"We may have over-billed it - it's not been a classic. What we have got is a style of match where Ireland have kicked a huge amount of ball away, which has taken the sting out of Wales' aggression, and Ireland's kick-chase has been magnificent."

Duncan Smith:, external Very poor half from Wales. Hibbard and Lydiate having bad games. Come on Ireland!

Graeme Hobbs:, external The Wales pack needs to step up and give their backs something to work with otherwise it is going to be a long afternoon.

Jamie Hosie:, external Jonathan Sexton is so dangerous when in this mood. Fizzing passes and spraying kicks into the corners.

Martyn Williams
Former Wales captain on BBC One

"Wales have been their own worst enemies and Ireland thoroughly deserve their lead at half-time."

Oh to be a fly on the wall in the Wales dressing room. It could be worse for the visitors but Jonathan Sexton's long-range penalty - the final action of the half - falls short of the sticks. Ireland are in control. The defending champions have serious work to do.

Image source, PA

Ireland have been using the kicking game of scrum-half Conor Murray (above) and fly-half Jonathan Sexton to pin Wales back in Dublin.

More pressure for Wales to soak up following another fine kick by the influential Jonathan Sexton. Ireland looking to add to their lead before the interval.

Phillip Matthews
Former Ireland captain on BBC One

"That was such a good kick by Ireland fly-half Jonathan Sexton, putting it into space on a sixpence to set up the line-out.

"The whole stadium knew what was coming with the line-out drive there but Wales just could not stop it."

Image source, AP

Tremendous stuff from Ireland. A huge roar goes up a kick by Jonathan Sexton results in a line-out drive, with Chris Henry going over. Sexton slots between the posts and Wales have a major headache.

Ten minutes to the interval and neither side are giving much away. The action is concentrated in the middle of the pitch. There's a rare foray deep into Irish territory but Wales lose possession from their own line-out. That sums up their game so far.