This is ongoing plan, of course.  An in case anyone thinks that Israel and the US will NOT nuke Iran after it fights back against any attack by attacking Israel's nukes and cities and the US Iraq Green Zone and military bases...
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http://www.washtimes.com/upi-breaking/20041107-055605-6954r.htm

Documents: U.S. had plan to nuke N. Korea



Seoul, South Korea, Nov. 7 (UPI) -- Newly declassified documents
revealed the United States planned as recently as 1998 to drop nuclear
bombs on North Korea if the country attacked South Korea. 

 
As part of "scenario 5027," 24 F15-E bombers flew simulation missions at
Seymour Johnson Air Force Base in North Carolina to drop mock nuclear
bombs on a firing range between January and June 1998, the Korea Times
reported Sunday.

The revelation followed claims by a South Korean lawmaker that the U.S.
drew up plans to launch preemptive strikes on key targets in North Korea
in 1994. 

The report also came amid concerns that President George Bush will take
a tougher stance with North Korea during his second term.

The declassified documents also said the U.S. had kept nuclear weaponry
in South Korea until at least 1998, despite officially claiming it had
withdrawn all nuclear warheads in 1991.