Hypothetical:
Two members of separate gangs want to kill your family. One of those members manages to kill a member of your family. The other gang member continues to threaten the family.
Why in the world would you care if the two gang members ever had tea together?
Because people just don't like being lied to. No-matter what the purpose.
There were enough reasons to take out Saddam without the shaky intelligence. See my posts 91-95