Editor & Publisher reports this, but I can’t find it in the Post:

NEW YORK The Washington Post’s editorial page endorsed Sen. Joe Lieberman for re-election in his third-party Connecticut U.S. Senate race on Sunday, saying that even though he lost the Democratic primary — and Republican leaders are now backing him — his victory in November would still be the best thing for his party. [...

Just as the Post editorial page was endorsing the pro-war candidate in Connecticut, the paper's front page carried a report that painted the war in the worst possible light. It opened, "The war in Iraq has become the primary recruitment vehicle for violent Islamic extremists, motivating a new generation of potential terrorists around the world whose numbers are increasing faster than the United States and its allies are eliminating the threat, U.S. intelligence analysts have concluded.

Here's that article:

A 30-page National Intelligence Estimate completed in April cites the "centrality" of the U.S. invasion of Iraq, and the insurgency that has followed, as the leading inspiration for new Islamic extremist networks and cells that are united by little more than an anti-Western agenda. It concludes that, rather than contributing to eventual victory in the global counterterrorism struggle, the situation in Iraq has worsened the U.S. position, according to officials familiar with the classified document.

"It's a very candid assessment," one intelligence official said yesterday of the estimate, the first formal examination of global terrorist trends written by the National Intelligence Council since the March 2003 invasion. "It's stating the obvious." [...]

Many of the new cells, the NIE concludes, have no connection to any central structure and arose independently. The members of the cells communicate only among themselves and derive their inspiration, ideology and tactics from the more than 5,000 radical Islamic Web sites. They spread the message that the Iraq war is a Western attempt to conquer Islam by first occupying Iraq and establishing a permanent presence in the Middle East.