Insane Apache:
You could argue that the IRA have won by arms and by talking.
When Ireland went wholeheartedly (and democratically) for the idea of independence all sorts of crap broke out including a war with the British government forces and then a civil war in the Irish Free State about whether to let 6 counties of Ulster remain in the U.K.
Back then it didn't matter what a majority of the people of Ireland wanted because the majority of the people in the U.K. did not want an independent Ireland. Now it is just when a majority of the people of Northern Ireland want unification with Ireland they can have it. That's a big difference.
The IRA have been granted concession after concession to stop them going back to violence (even though at one point the British government told them that they weren't achieving anything as the British Army probably lost more soldiers in training at German bases than at the hands of the IRA). Admitedly, British troop reductions have not occurred at a similar level as agreed and the Loyalists haven't been forced to disarm either but that's besides the point.
Anyway, the IRA have basically destroyed the interest of almost all mainland U.K. residents in expending lives trying to maintain Northern Ireland as part of the U.K. Now it seems like a united Ireland is almost inevitable and nobody in the mainland really cares: a pretty big difference compared to the situation when all this trouble flared up again in the 60s.
You could almost call the Good Friday Agreement a negotiated surrender by both sides(but one had achieved a lot more than the other).
As for NorAid: they advertise themslevs as a charity more than as a lets-go-kill-us-some-Brits organisation.