[Fedora]

Here's a link to the original YouTube video of the transcript you mention where Obama pledged global nuclear disarmament during the 2008 campaign:

Obama-Caucus4Priorities

He was also talking like this back in the 1980s when he supported SANE-FREEZE--have an old link on that somewhere I'm trying to track down.

[Fedora]

Here we go:

Obama’s Youth Shaped His Nuclear-Free Vision

Obama's 1983 College Magazine Article

The organizations Obama praises in the article are Arms Race Alternatives (ARA) and Students Against Militarism (SAM). The latter worked with CISPES, targeted by the FBI during that time.