He told the truth, but only for a moment:
I have seen the answer to that question migrate in the intelligence community over the period of a year in the most amazing way. Second, there are differences in the intelligence community as to what the relationship was. To my knowledge I have not seen any strong, hard evidence that links the two.
But then Rumsfeld claimed to have been “misunderstood.” What part of “I have not seen any strong hard evidence” do I need explained more slowly?