Neither Israel or the USA have put forth any evidence of flaws. To the contrary, Netanyahu and the Obama people have focused their energies on discrediting Goldstone personally. This tells me that Goldstone may be very close to the truth, and that truth may implicate Israeli leadership in the authorization of actions akin to war crimes. Why else would Netanyahu suddenly be proposing a change in the rules of conducting war on terrorism?
Israeli PM to Palestinian President Abbas: We must fight terror together (Haaretz)
from the article: Goldstone tells Obama: Show me flaws in Gaza report