Clark was their puppet candidate and they need badly to maintain their control over the Democratic Party.
There is bad blood between the Clinton faction and the Kennedy faction (all about power and control) so it is absolutely necessary that Kerry loses whether it be in November or sooner.
Since they never do anything directly, it's obvious that they are using their 'intelligence network' to get the goods on Kerry and allow it to 'leak' out.
This is getting GOOD!
And fortunately the Dems don't understand how much better off they would be if they cut the cord with both factions.
I don't think they counted on Clark self-destructing the way he did. This Kerry story did not germinate yesterday, but when Clark was looking good - to some.