I don't blame them for saying it. Like I wouldn't blame them if they said it to Israel too. The reasoning would be pretty much the same in fact.
You wouldn't be surprised because maybe they've been saying it to Israel for thirty years now?
This is why I don't trust or don't approve of the UN in the least. They talk big and yell at aggressive countries for starting wars, but they don't actually do anything practical to prevent said wars. Diplomacy will only go so far with countries with powerful militaries and a fervent belief in a cause, and since the US, which has defied the UN to date, supports Israel technologically and militarily there's not much to stop Israel from saying "**** you, UN," and using military force against those that truly want Israel destroyed.
Crazy Ivan is actually somewhat right: the UN is majorly anti-Israel, and the US catches flak for (among other things) supporting Israel and using its veto to protect Israel (even with that, 88 resolutions in the Security Council have been passed to condemn Israel for a number of things, and 321 times in the General Assembly). The UN condemns Zionism as racism, but what about anti-Semitism being preached by the Muslim countries?
Israel's just taking matters into its own hands now; the UN sure as hell isn't going to stop Hezbollah, Hamas, or any other terrorist organization in the Middle East from killing Israelis, so Israel will.