When you mention IRA in the States (providing you weren't lead by the first question to know the ETA was a terrorist group) the first thing that comes to mind is Individual Retirement Account
That's interesting, I thought the IRA would be fairly well known in the states since there are so many people there of Irish decent.
You're right, I didn't mean to imply that the IRA wasn't well known in the US - they are. Just the way he phrased the question 'who knows what IRA means?' Could give you a couple of different responses depending the context of discussion and where you are located.