You're bright, so its a pity your vain desire to be a polemicist sometimes overrules that.
Nolan's point, such as it was, is that it was wrong to talk to the IRA. If no-one had talked to them then the peace process wouldnt have started. I'm not saying Corbyn made any contribution to the process, but to pretend he is somehow evil for talking to them whilst Thatcher is heroic is facile.