I don't want to get into semantics about preparations and preconditions, but here's a recent article that cites Kissinger:

Former U.S. Secretary of State Henry Kissinger says the United States should begin direct negotiations with Iran over its nuclear enrichment program. Kissinger, speaking Monday at George Washington University along with four other former U.S. State Department secretaries, said the next president should initiate high-level discussions with Iran "without conditions," ABC News reported.

In general there is no doubt that Kissinger, who was prepared to meet with Mao, is not exactly queasy about directly engaging foreign tyrants. He's a realist and McCain is now a full metal neocon. Obama is much more in the Kissinger tradition than McCain is. But, frankly, I'm not sure what McCain is any more. And I'm not entirely clear he knows either.

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