The disclosure of tens of thousands of classified reports on the Afghan war last week by WikiLeaks has been compared, rightly or wrongly, to the release in 1971 of the Pentagon Papers, a top-secret history of U.S. involvement in Vietnam from 1945 to 1967. "The parallels are very strong," Pentagon Papers contributor and leaker Daniel Ellsberg told The Washington Post on Monday. "This is the largest unauthorized disclosure since the Pentagon Papers."

But perhaps not large enough? Outlook asked Ellsberg for his wish list of documents to be leaked, declassified or otherwise made public, documents that could fundamentally alter public understanding of key national security issues and foreign policy debates. Below, he outlines his selections and calls for congressional investigations:

1. The official U.S. "order of battle" estimates of the Taliban in Afghanistan, detailing its size, organization and geographic breakdown -- in short, the total of our opponents in this war. If possible, a comparison of the estimate in December 2009 (when President Obama decided on a troop increase and new strategy) and the estimate in June or July 2010 (after six or seven months of the new strategy). We would probably see that our increased presence and activities have strengthened the Taliban, as has happened over the past three years.

2. Memos from the administration's decision-making process between July and December 2009 on the new strategy for Afghanistan, presenting internal critiques of the McChrystal-Petraeus strategy and troop requests -- similar to the November 2009 cables from Ambassador Karl W. Eikenberry that were leaked in January. In particular, memos by Vice President Biden, national security adviser Jim Jones and others; responses to the critiques; and responses to the responses. This paperwork would probably show that, like Eikenberry, other high-level internal critics of escalation made a stronger and more realistic case than its advocates, warranting congressional reexamination of the president's policy.

3. The draft revision, known as a "memo to holders," of the National Intelligence Estimate on Iran from November 2007. This has been held up for the past several months, apparently because it is consistent with the judgment of that NIE that Iran has not made a decision to produce nuclear weapons. In particular, the contribution to that memo by the State Department's Bureau of Intelligence and Research (INR), since the INR has had the best track record on such matters. Plus, estimates by the INR and others of the likelihood of an Israeli attack on Iran later this summer. Such disclosures could arrest momentum toward a foreseeably disastrous U.S.-supported attack, as the same finding did in 2007.

4. The 28 or more pages on the foreknowledge or involvement of foreign governments (particularly Saudi Arabia) that were redacted from the congressional investigation of 9/11, over the protest of then-Sen. Bob Graham (D-Fla.).

On each of these matters, congressional investigation is called for. The chance of this would be greatly strengthened by leaks from insiders. Subsequent hearings could elicit testimony from the insiders who provided the information (whose identities could be made known to congressional investigators) and others who, while not willing to take on the personal risks of leaking, would be ready to testify honestly under oath if requested or subpoenaed by Congress. Leaks are essential to this process.

outlook@washpost.com