Sorry Pubey for the single highlighted bit, very rude and the way you worded it deserves a proper answer(a hang up of a certain person who's very same tactic drove me to unfairly use it against you, my apologies)
I'll answer each paragraph as I'm rubbish at splitting into separate quotes,
Yes, I would expect him to condemn all violence from all factions in NI, he hasn't done that. He was well known for his role with TROOPS OUT and his condemnation of the protestant groups and the British Army but noticeably silent on atrocities carried out by the IRA or INLA. That course of action has appeared to not have changed.
Having a cosy chat with two terrorists who wouldn't shred a single tear if the building they were meeting in was blown up seconds after they left isn't a crime, morally, I'm not so sure.
http://www.dailymail.co.uk/news/article-3169752/Jeremy-Corbyn-invites-Gerry-Adams-Martin-McGuinness-Parliament.html
Forgive the link, it was the first one to pop up but it's worth seeing what Norman Tebbet had to say. Dig a picture out of him being rescued from the debris when you get time, stare at it for a couple of minutes, it will then be forever in your mind. I won't bother you with a tedious list of other targets and atrocities except one, Warren Point. I met the parents of one of the survivors when I took the pub they were running, over. The first words out of the mothers mouth were to my Irish wife She said 'I'm glad my son isn't here tonight, it would cause quite a scene what with a Irish girl taking over the place' That was the lasting impression on her now wheelchair bound son. I doubt Corbyn and his mates would be too bothered about that though.
As for your final paragraph, well not an awful lot I can say about that apart from yes, I agree. Hope that's a bit better than my previous effort.