"I don't think that, with all due respect, the Russian president is authorized to speak for Israel and certainly we have not taken any option off the table." The Russian president did not pretend to speak for Israel. But he certainly can assume that the Israeli president speaks for Israel, and just as certainly he can take it as insult, both personal and towards Russia, when Peres lies to him. The message is: You can now make me look like a fool for believing you, but be prepared to pay a price. You don't fool the president of Russia and go home laughing.
Monitor: Airstrikes hit Islamic State stronghold in Syria, killing at least 13 (Reuters)
from the article: Barak tells Gates: All Iran options still on table