I think one thing you can't accuse Lieberman of just wanting to keep his job. I think he is sincerely wrong but sincere on his views which have widely differed from most democrats since around the time of the Iraq war and the patriot act and other issues in that line started to become questioned by the voting democrats. Not the democrats in congress; it took them awhile to realize how we felt, some of them changed accordingly but Lieberman didn't. In my view; Hillary is more like Lieberman except she did eventually (johnny came lately) change her tune somewhat for political reasons only.
What amazes me is that we all that were labeled outside the mainstream and the radical left were right all along and the right and Lieberman refuses to accept it and admit it even now and keep on defending the indefensible. Now they want us to believe them on Iran and believe them on the reasons to stay in Iraq and they present their argument as though they have credibility left to do so.
Senate Intelligence Committee Unveils Final Phase II Reports on Prewar Iraq Intelligence
Report
The Bush administration who Lieberman has aligned himself with kept giving disputed evidence as though there were no dissenting intelligence. If they were honest they could have said something like "a majority of intelligence says this... but there are some dissenting views from the State Department (or whoever)" so that people in the US could have made an informed honest judgment on whether to support the US abandoning the UN inspections efforts which at the time of the invasion said to that point they had found no evidence of stockpiles of WMD.
For me it is the Iraq war which has turned me against Lieberman and his general hawkish stance on all foreign and terrorist matters. So whatever he says now don't matter a hill of beans in my view.