Nigel Owens: No, the law is the same. A high tackle that is dangerous, someone leading with a swinging arm, was always to be penalised by a red card and that will still be a red card.
What has changed is that there is a greater call upon us as referees to focus more on the whole issue, to have a greater awareness of it.
Suddenly there is an important new guideline for us to act upon. So if you tackle high in the Six Nations, be prepared to take the consequences, whether you agree with it or not.
Why the change of stance?
Nigel Owens: The directive has come because we want to look after player welfare, from the very top elite level of the game down to rugby at age-grade level.
There is an awareness of concussion, of too many players taking blows to the head and the need to get them focused with their tackling so that we minimise the risk.
There will be a zero tolerance approach to this and it is clearly the correct thing to do. We each love this game, but we want it played in as secure an environment on the pitch as possible.
What is a high tackle and what is the punishment?
Nigel Owens: I explain this better in the video above, so please take a look at that also. But basically a high tackle is anything from around the shoulder or above.
It is deemed dangerous if you are coming in with a swinging arm. That is a red card.
Depending on the nature of the offence, we can also issue yellows or just give a straight penalty.
The speed limit on the M4 is 70mph. If you do 75mph and are caught, you might get a lesser sanction. If you're doing 95, it could be six points, a ban whatever.
The law is the law. There are different sanctions, depending upon the severity of the offence.
Won't this just lead to inconsistency of cards and confusion for the fans and TV viewers?
Nigel Owens: Referees will always come under scrunity. There can be 10 fantastic decisions made in a game and just one that is wrong... but invariably the focus from the media and fans will be on that one. That's just the way it is, we understand that.
But you can't necessarily look at every card given during the Six Nations in isolation.
We could have a high tackle in England versus France on Saturday and only a penalty given. Then, during Italy versus Wales on Sunday, we could see a seemingly identical incident, yet a yellow card is brandished.
Fans will be thinking why one punishment in one game and different punishment in the other?