The second shortest explanation you'll ever read proving that Beinart is a tool
By trying to reguritate the platform of Joseph Lieberman, Beinart has vaulted himself up as a leading member of the "Democrats must move even farther to the right" crowd. This is lunacy, absolutely luancy. In effect, Beinart is saying that we have to become the Republicans if we ever hope to defeat them, and thus he has displayed two negative factors about his intellect and values.
Intellectually, Beinart shows that he cannot grasp the most simple of concepts in American politics: It's impossible to move to the right of the Republican Party. If the Democrats continue to try, then they will continue to looked upon as Republican-Lites, who Republicans nor Liberals will never feel compelled to vote for.
But what I find most troubling about Beinart are his values. What Beinart essentially said with his article is that he could give a damn about what the Democrats stand for because they have to win elections, and to do such, they will need to foment neoconservative values. Or, in other words, Beinart cares solely about power and doesn't give a damn about the methods used in obtaining that power. This makes Beinart a certifiable asshole who doesn't give a damn about his country or what we do abroad.
There's already a party which shares Beinart's values. They are called the Republicans, and my suggestion to him is that he join them.
[15:23 - Grammar corrections.]