Saddam Hussein's chief scientific adviser Amir al-Saabi also offered to allow the CIA to join the United Nations weapons inspection teams currently in Iraq.
Earlier, Israel said it will stage joint military exercises with the United States as part of the country's preparations for possible attack by Baghdad, following any strike on Iraq.
Israel is concerned that Iraqi President Saddam Hussein will respond to any US strike by launching missiles with chemical or biological warheads.
The United States has renewed calls for the United Nations weapons inspections in Iraq to be conducted more aggressively.
The US National Security Advisor, Condoleezza Rice, said she wanted the number of inspectors on the ground to be increased to 250 or 300 - from a current total of just over 100.
Other senior US officials also want the inspections to be more vigorous and to include simultaneous visits to a wide range of sites.
The calls come as US forces are pressing ahead with plans for war in Iraq, with a big military exercise in Kuwait.
