And no, not because this document dump undermines the case that only Israel seeks preemptive war with Iran. James Rubin makes the argument that Wikileaks has turned itself into an enemy of diplomacy, which is something leftists (and others) value over warfare:

By and large, the hard left in America and around the world would prefer to see the peaceful resolution of disputes rather than the use of military force. World peace, however, is a lot harder to achieve if the U.S. State Department is cut off at the knees. And that is exactly what this mass revelation of documents is going to do. The essential tool of State Department diplomacy is trust between American officials and their foreign counterparts. Unlike the Pentagon which has military forces, or the Treasury Department which has financial tools, the State Department functions mainly by winning the trust of foreign officials, sharing information, and persuading. Those discussions have to be confidential to be successful. Destroying confidentiality means destroying diplomacy.