Iran ends cooperation with UN nuclear arms probe

By GEORGE JAHN, Associated Press WriterThu Jul 24, 5:16 PM ET

Iran signaled Thursday that it will no longer cooperate with U.N. experts probing for signs of clandestine nuclear weapons work, confirming the investigation is at a dead end a year after it began.
The announcement from Iranian Vice [...]

I would guess that this is a good time to get long oil.
http://latimesblogs.latimes.com/babylonbeyond/2008/07/iran-no-u-turns.html