Interesting Gelb was consulted on this:
Clarke Known As Abrasive but Efficient
Leslie Gelb, who hired [Richard] Clarke for his first State Department job in 1979. . .
Amid his own growing doubts about the war he had encouraged, McNamara quietly left the government in early 1968. Before doing so, however, he ordered a small staff in the Department of Defense to undertake a secret study of U.S. decision-making about Vietnam since the end of the Second World War. The study was directed by Leslie Gelb.
About nine months into the [Pentagon Papers] project, Daniel Ellsberg of the Rand Corporation climbed aboard. Even though Ellsberg behaved erratically throughout and failed to meet deadlines, Gelb and [Paul C.] Warnke agreed to give him "personal access to the entire study."
Powell, 90:
On February 14, 1985, Leslie Gelb broke a front-page story in the New York Times titled "U.S. tries to Fight Allied Resistance to Nuclear Arms." In it, Gelb revealed that the United States had drawn up plans to deploy nuclear depth charges in Canada, Iceland, Bermuda, Puerto Rico, the Azores, the Philippines, Spain, and Diego Garcia in time of war. Gelb's source for this classified information? The Institute for Policy Studies. . .These stories struck a raw nerve in the alliance. . .and subsequently led to the demise of the ANZUS alliance.