Former U.N. Ambassador Bill Richardson said Monday he was "dubious" that negotiations over Iran's nuclear program would move the country toward more responsible behavior in the region and lead to a more manageable, moderate situation in the Middle East.

"I had wanted these negotiations to include Iran's behavior," Richardson told CNBC's "Squawk Box." "You've got to see what the details are, but I support negotiating with bad regimes, but I want to see a good deal rather than any deal."