Theresa May’s speech this week will likely go down as a watershed moment in the history of the European Union. Back in 1973, Ireland and the UK joined the then EEC together and, over the years, the UK has proven a very close ally for Ireland at the negotiation table in the EU. However, May’s speech this week signals the separation of our partnership as the UK begins its journey out of the EU alone.Since the Brexit vote, the defining word of 2016 had been uncertainty. This speech offers the first certainty we have seen since last June and provides some clarity to the negotiating position of the UK. However, this is just the beginning of what could prove to be a long road of negotiations between the UK and the EU. For Irish farmers, Brexit looks like it will be the biggest challenge to face the sector since joining the single market.