Gershom Gorenberg, in an op-ed published in the New York Times, intimates a scoop.
He notes that warnings about the legality of the new Jewish communities built across
the Green Line, "settlements", were kept secret. He "reveals" the contents of a
memorandum composed by then legal advisor Theodor Meron presented to the government
in September 1967.
However, Reuven Pedatzur, in his 1996 study, "Triumph of Embarassment", quotes from the memo. He provides the author's name, position and when it was presented to the then Foreign Minister, Abba Eban, who had initiated it. That took place on September 14, 1967. Four days later, it was presented to Levy Eshkol, the Prime Minister. The episode appears on pages 194-195 in his book.