Welcome aboard!
One thing I'd say as well is that we *are*, as a party, committed to nuclear disarmament - the party as a whole just want multilateral disarmament, and see retaining *some* nuclear weapons for a short time as a bargaining chip in negotiations. Personally I disagree - and there are a lot of unilateralists in the party like myself - but I can see the argument, and it's very different from the 'we need it to keep Britain important' crap...