Since 2004, the US, Israel and Turkey have formulated concrete war plans involving air raids on Iran's nuclear sites. Israel is slated to play a direct role in the US sponsored military operation against Iran, which is also the object of consultations at the G8 meeting in St. Petersburg on July 15-17.
Since late 2004, Israel has been stockpiling US made weapons systems in anticipation of an attack on Iran. This stockpiling, which is financed by US military aid was largely completed in June 2005. Israel has taken delivery from the US of several thousand "smart air launched weapons" including some 500 'bunker-buster' bombs, which can also be used to deliver tactical nuclear bombs. US tactical nuclear weapons have been deployed by the US and several of its allies and could be used against Iran. Israel's thermonnuclear missiles are pointed at Tehran.
The participation of Turkey in the US-Israeli military operation is also a factor, following a 2004 agreement reached between Ankara and Tel Aviv.
http://www.indymedia.org.uk/en/2006/07/345265.html