Well, in actual fact, by his own admission ( 2004 ), Donald Rumsfeld admitted that low-level negotiations were taking place in Iraq with the 'insurgents' - about the only useful thing that he did of late in his blundering career. I have no doubt whatsoever that similar meetings have been taking place with Iran and Syria all along. It would actually be without precedent if discussions were not already taking place.
During WWII, quite close negotiations were taking place between Germany, Italy and the UK. Count Ciampino, Mussolini's brother-in-law outlines the wide-reaching depth of these negotiations in his personal diaries, and they are very surprising.
It is not unknown for politicians to say one thing to the public, while administering their affairs in private in a quite contradictory manner. This is the stuff of politics and frankly we should be worried if they were not being deceitful. Any politician stupid enough to speak the complete truth to his public will have a very short, stormy and relatively ineffectual career, though such a person makes a good Hollywood hero.
HS