Israel refused to cooperate with Goldstone in his Gaza fact finding mission so that later Israel could claim the report was biased. It was simple posturing to avoid the truth. Now Israel is posturing again, but this time it will claim the USA biased the negotiations as they fail to progress as Israel wants them. This is the politics of obfuscation. The USA has blindly supported Israel historically. Israel is just trying to make it difficult for the USA to stand for truth.
Defense Ministry says had no knowledge of alleged improper defense deals by Gal Hirsch (Haaretz)
from the article: Secret Israeli report: U.S. cozying up to Palestinians