This is what Walt and Mearsheimer said about the Israel lobby, it acts to protect Israel in the press. I am guessing Assange is referring to the New York Times, among other publications. Al Jazeera:
DOHA: WikiLeaks will release top secret American files concerning Israel in the next six months, its founder Julian Assange disclosed yesterday.
In an excusive interview with Al Jazeera, Assange said only a meagre number of files related to Israel had been published so far, because the newspapers in the West that were given exclusive rights to publish the secret documents were reluctant to publish many sensitive information about Israel.
“There are 3,700 files related to Israel and the source of 2,700 files is Israel. In the next six months we intend to publish more files depending on our sources,” said Assange in the nearly one-hour interview telecast live from the UK.