Bush worked to get those same multilateral talks. I don't believe that N. Korea was really interested in stopping. I know I would not have been were I their leadership.In short,
-Clinton found out about N. Korea's plutonium enrichment activities (which must have begun under the Bush 41 and Reagan adminstrations) in 1994 and put a stop to it. I don't recall Clinton or his supporters ever blaming poppy bush or reagan for letting korea embark on a plutonium program.
-Bush 43 found out about N. Korea's uranium enrichment program (another and separate path to the bomb - done with the help of the Pakistanis) in 2002, and Bush failed to put a stop to it.
I'm always interested in why people think that another nation would actually stop because of things like this when it is evident that they don't? They worked to find help in the background while we paid them not to. They got that help and knew they were closer than ever. I don't think there was one thing we could do to stop them at that point.