The blunders you quote are very clear, precise, and unquestionable. The UNIFIL deal that allowed Hizballah to grow stronger a year after the war in Lebanon. The Philadelphi route deal that allows Iran to carbe Hamastan out of Gaza. Yes, you are right. But why do you crucify Tzipi Livni for those blunders? They are Olmert's government blunders just as much as Livni's. As for she just being there to stab her boss in the back, you could argue the other way around also.
4 UN peacekeepers injured in Sinai and taken to hospital in south Israel (Haaretz)
from the article: Livni behind closed doors: Iran nukes pose little threat to Israel