The “Palestinians” have always been at war with Israel. How can you be so foolish as to suggest this is not the case? We no more talk nor need to talk to Iran than we did with Saddam Hussein although Barack Hussein Obama wishes to have a dialogue. For Israel to have spies is one thing, but to have diplomatic talks...nation to nation....Israel shouldn’t even bother. Japan was beaten back island by island, and we never had any other objective than their surrender. The same with Germany, unconditional surrender.
The US has had communications and negotiations with Iran. This is a matter of established fact, with the last public meeting in Geneva in the middle of 2009. I am sure that Israel would seek talks with and convey threats to Iran if they thought it would be worthwhile.
The WW II US policy of "unconditional surrender" was an exception to the normal practice of nations at war and remains controversial. The policy was promulgated by FDR at the 1943 Casablanca conference in response to domestic pressures from the Left, spurred by Soviet concerns that the US and Britain might make a separate peace with Hitler.