To be fair, I think the IRA supporters/funders in the US, particularly in NYC learnt a lot about terrorism on 911. I saw 'charity' boxes in bars in NYC with signs on like 'Donate a dollar and help kill another Brit soldier' during the eighties and of course the poor fools who put money in were too dumb to realise that the IRA had close links with all the muslim terror groups and shared their skills with them. Those donations paid for the IRA terrorists to meet with al-quaeda in the Libyan desert in the early nineties and swap techniques for weapons. Those techniques arrived in NYC on 911 and those donations were returned with interest, sadly.
Yes, and there are AQ operatives here in Ireland - no doubt Sinn Fein/IRA are providing them with a safe haven.