Israel has scheduled joint exercises with US forces in advance of any war in the Gulf.
The exercises will include gas mask lessons for children, Israeli officials said.
Israeli media said the nation would go on high alert from January 15th in anticipation of war starting in the month after January 27th. The Defence Ministry refused to confirm the reports.
Some 1,000 US troops were expected in Israel this week for an exercise involving US-made Patriot missiles, which were largely ineffective against Iraqi Scud missiles in 1991.
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Israel was a target for Iraqi missiles during the 1991 Gulf War over Kuwait.
The Patriot has since been upgraded and Israel has developed and deployed the more effective Arrow anti-missile system.