As Irish citizens know all too well, people move relatively freely from one country to another.

So does money and music. English is the global language, and our modern communication tools recognise no borders. Drones can invade another country, kill and depart without need for armies.

On Talking Point today, Sarah asked: if borders have become irrelevant, what is the point of the nation state? She was joined by:

• John Waters, columnist with the Irish Times,
• Constantin Gurdgiev, lecturer in finance at Trinity College and University College Dublin,
• Graham Finlay, lecturer from UCD's School of Politics and International Relations.

You can listen back to the discussion below, and let us know your thoughts on Twitter: @talkingpointnt.

Our podcast is also available under 'Talking Point Panel Discussion' on iTunes and podcast apps.